The absolute value of a number is its distance from zero on a number line . For instance, 4 and − 4 have the same absolute value ( 4 ). So, the absolute value of a positive number is just the number itself, and the absolute value of a negative number is its opposite. The absolute value of 0 is 0 . Easy!Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more.The absolute value function has a derivative (s) on restricted domains. i.e. f' (x) = -1 for x <0 and f' (x) = 1 for x > 0. However, the absolute value function is not "smooth" at x = 0 so the derivative at that point does not exist. The power rule only applies to power functions.Use this calculator to find the absolute value of any number, including -4. The symbol for absolute value is | x | where | x | = x, and | -x | = x. Learn the definition, formula and examples of absolute value.Apr 2, 2024 · For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line. Furthermore, the absolute value of the difference of two real numbers is the distance between them. The absolute value has the following four fundamental properties: We could say that the absolute value of a number is its purely arithmetical value. Here is the algebraic definition of | x |: If x ≥ 0, then | x | = x; if x < 0, then | x | = − x. That is, if x is non-negative: |3|, then the absolute value is the number itself. If x is negative: |−3|, then the absolute value is its negative; that makes ...a) Using the midpoint formula, calculate the absolute value of the price elasticity of demand between e and f. is coincident with the horizontal axis. lies above the midpoint of the curve. lies below the midpoint of the curve. D) is coincident with the vertical axis.This page titled 4.4: Absolute Value Inequalities is shared under a CC BY-NC-SA 2.5 license and was authored, remixed, and/or curated by David Arnold via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.The absolute value of a number is the actual distance of the integer from zero, in a number line. Therefore, the absolute value is always a positive value and not a negative number. We will use the following approaches to find the absolute value of a number: Using If Statement; its distance from zero on the number line. * For the notation, we use two big vertical lines. Check it out: Find the absolute value of 4: Find the absolute value of -5: continue. 1. of 2. This prealgebra lesson defines and explains how to find the absolute value of a number. Now, let us find the absolute value of a complex number z = 6 + 8i is ${\sqrt{6^{2}+8^{2}}}$ = ${\sqrt{100}}$ = 10. In Unit Circle. Complex numbers can have an absolute value of 1. It is the same for -1, just as for the imaginary numbers i and -i. This is because all of them are one unit away from 0, either on the real number line or the ...The absolute value of a number is the actual distance of the integer from zero, in a number line. Therefore, the absolute value is always a positive value and not a negative number. We will use the following approaches to find the absolute value of a number: Using If Statement;An absolute value function is a function that contains an algebraic expression within absolute value symbols. Recall that the absolute value of a number is its distance from 0 on the number line. The absolute value parent function, written as f ( x ) = | x | , is defined as. f ( x ) = { x if x > 0 0 if x = 0 − x if x < 0.This page titled 2.4: Inequalities with Absolute Value and Quadratic Functions is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by Carl Stitz & Jeff Zeager via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.The absolute value51 of a real number a, denoted | a |, is defined as the distance between zero (the origin) and the graph of that real number on the number line. Since it is a distance, it is always positive. For example, | − 4 | = 4 and | 4 | = 4. Both 4 and − 4 are four units from the origin, as illustrated below:An absolute number takes the positive value of a number, without regards to its sign. Mean is an average of a set of numbers. So, what is the mean absolute deviation? It's the average of every value's distance from a certain central point. This point can be a mean, median, mode, or any other statistically significant number.fabs () function of math.h header file in C programming is used to get the absolute value of a floating point number. This function returns the absolute value in double. Syntax: double fabs (double a); Parameter: It will take a single parameter which is to be converted to an absolute value. Return Value: While passing values to fabs (), we …Apr 2, 2024 · For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line. Furthermore, the absolute value of the difference of two real numbers is the distance between them. The absolute value has the following four fundamental properties: About absolute value equations. Solve an absolute value equation using the following steps: Get the absolve value expression by itself. Set up two equations and solve them separately.The absolute value of a complex number is just the distance from the origin to that number in the complex plane! This tutorial shows you how to use a formula to find the absolute value of a complex number. Keywords: problem; absolute value; complex numbers; pythagorean theorem; complex plane;Facts about Absolute Value 4: absolute value in mathematics. Absolute value is one of the important topics in mathematics. You can also find it in other mathematical settings. The ordered rings, quaternions, complex numbers, and vector spaces are defined using absolute value. Absolute Value Learning. So the absolute value of negative 1 is 1. And the absolute value of 1 is also 1 away from 0. It's also equal to 1. So on some level, absolute value is the distance from 0. But another, I guess simpler way to think of it, it always results in the positive version of the number. The absolute value of negative 7,346 is equal to 7,346. Assuming "absolute value" is a math function | Use as referring to a mathematical definition instead. Input. Plots. Alternate form assuming x>0. Alternate form assuming x is real. Root. Step-by-step solution; Properties as a real function. Domain. Range. Parity. Derivative. Step-by-step solution;Question 764709: Find the absolute value of the complex number 4 + 4i Find the absolute value of the complex number -3 - 6i Find the absolute value of the complex number 5 - 4i. Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website! Rule: |a+bi| = sqrt[a^2+b^2]The absolute value of a number may be thought of as its distance from zero. In mathematics, the absolute value or modulus of a real number , denoted , is the non-negative value of without regard to its sign. Namely, if is a positive number, and if is negative (in which case negating makes positive), and . For example, the absolute …To simplify the given expression, first square three tenths, then calculate the absolute value and divide. Finally, add the results to get-11.57. Explanation: To simplify the expression, we need to follow the order of operations (PEMDAS/BODMAS). Let's break down the expression step by step: Square three tenths: (3/10)2 = 9/100.The magnitude of this value. typealias Magnitude. A type that can represent the absolute value of any possible value of this type. func signum() -> Int. Returns -1 if this value is negative and 1 if it's positive; otherwise, 0. Apple. Developer. Documentation. Returns the absolute value of the given number.After determining that the absolute value is equal to 4 at x = 1 x = 1 and x = 9, x = 9, we know the graph can change only from being less than 4 to greater than 4 at these values. This divides the number line up into three intervals: x < 1, 1 < x < 9, and x > 9. x < 1, 1 < x < 9, and x > 9.The general form of absolute value notation equation is: F (x) = k + a |x - h|. This equation used by the absolute value graph calculator, where, k and h tell about how the graph shifts vertically and horizontally. The variable "a" tells us how far the value graph stretches vertically, and whether the graph opens down or up.Test prep. Improve your math knowledge with free questions in "Absolute value of rational numbers" and thousands of other math skills.In this case, the absolute value of -4 is 4 because both -4 and 4 are located 4 units away from zero in opposite directions. Related Questions. Find the absolute maximum and absolute minimum values of the function f(x)=(x−2)(x−5)^3+11 on each of the indicated.Answer: 4.5. Step-by-step explanation: absolute value: the distance away from zero, it will always be positive because distance can't be negative. thus, the absolute value of 4.5 = the distance of 4.5 to zero, which is 4.5. |4.5| = 4.5. arrow right.Absolute Value Equations Practice Problems with Answers. There are eleven (11) practice problems in this collection regarding absolute value equations. Whether you're a beginner or seeking a challenge, there's something here for you. As you tackle each problem, remember that in every attempt, right or wrong, fuels your mathematical growth.When solving absolute value equations, there are two cases to consider: Case 1: The expression inside the absolute value bars is positive. Case 2: The expression inside the absolute value bars is negative. Example 1. Take the expression | 4 x + 2 | = 18 as an example. For this to be true, either.Assuming "absolute value" is a math function | Use as referring to a mathematical definition instead. Input. Plots. Alternate form assuming x>0. Alternate form assuming x is real. Root. Step-by-step solution; Properties as a real function. Domain. Range. Parity. Derivative. Step-by-step solution;Now, let us find the absolute value of a complex number z = 6 + 8i is ${\sqrt{6^{2}+8^{2}}}$ = ${\sqrt{100}}$ = 10. In Unit Circle. Complex numbers can have an absolute value of 1. It is the same for -1, just as for the imaginary numbers i and -i. This is because all of them are one unit away from 0, either on the real number line or the ...Absolute Value is the distance a number is from zero. In algebra we study many topics about absolute value to include the definition of absolute value, absol...Question 448581: what is the absolute value of 4+7i. Answer by jim_thompson5910 (35256) ( Show Source ): You can put this solution on YOUR website! Start with the absolute value of a complex number formula. This is also known as the magnitude of a complex number formula. Plug in and . Square to get.Definition: Absolute Value. Absolute value for linear equations in one variable is given by. If |x| = a, then x = a or x = −a If | x | = a, then x = a or x = − a. where a a is a real number. When we have an equation with absolute value, it is important to first isolate the absolute value, then remove the absolute value by applying the ...An ndarray containing the absolute value of each element in x. For complex input, a + ib , the absolute value is \(\sqrt{ a^2 + b^2 }\) . This is a scalar if x is a scalar.Practice set 1: Finding absolute value. To find the absolute value of a complex number, we take the square root of the sum of the squares of the parts (this is a direct result of the Pythagorean theorem): | a + b i | = a 2 + b 2. For example, the absolute value of 3 + 4 i is 3 2 + 4 2 = 25 = 5 . Problem 1.1.5.4. Absolute values and the triangle inequality. The triangle inequality is a very simple inequality that turns out to be extremely useful. It relates the absolute value of the sum of numbers to the absolute values of those numbers. So before we state it, we should formalise the absolute value function.The absolute value of a number is its non-negative value without regard to its sign. [Math]::Abs(-5) Absolute value function. Trigonometric functions. Trigonometric functions apply to calculations related to angles. I suppose you remember them well from school. Sine [Math]::Sin(90) Cosine [Math]::Cos(90)Simplify absolute value expressions using algebraic rules step-by-step. absolute-value-calculator. en. Related Symbolab blog posts. Middle School Math Solutions – …The absolute value of a number is its distance from zero on the number line. The symbol for absolute value is @$\begin{align*}| \ |\end{align*}@$ . Let's look at an example. @$\begin{align*}|-3|\end{align*}@$ This is read as "the absolute value of -3". To figure out the absolute value of -3, think about how far the number -3 is from zero ...5 abs(4 + 3i) = sqrt(4^2 + 3^2 )= sqrt( (4 + 3 i) *(4 - 3i)) = 5. Precalculus . Science ... How do you find the absolute value of #4+3i#? Precalculus Complex Numbers in Trigonometric Form Complex Number Plane. 1 Answer Eddie Feb 4, 2017 5. Explanation: #abs(4 + 3i) = sqrt(4^2 + 3^2 )= sqrt( (4 + 3 i) *(4 - 3i)) = 5# ...Answer: Step-by-step explanation: Absolute Value of the number is the distance of the number from zero on the number line. Thus, the absolute value of -8 and 8 is the same i.e. 8. That means, the absolute value of negative or positive of that number is always a positive number of that number.For example, the absolute value of 4, written as |4|, is 4 because it is 4 units away from 0 on a number line. The absolute value of -3, written as |-3| is 3 because it is 3 units …Finding the Absolute Value of a Complex Number. The first step toward working with a complex number in polar form is to find the absolute value. The absolute value of a complex number is the same as its magnitude, or [latex]|z|[/latex].It measures the distance from the origin to a point in the plane.The absolute value of -4 is 4, because -4 is 4 units to the left of 0. The absolute value of 4 is also 4, because 4 is 4 units to the right of 0. Opposites always have the same absolute value because they both have the same distance from 0.What is absolute value? Absolute value is the distance a number is from 0.. To find the absolute value, place the number on a number line and measure the distance from 0.. For example, What is the absolute value of -2?-2 is 2 away from 0, so the absolute value is 2.. To write this mathematically, use the absolute value symbol, which is two vertical bars around a number or expression: |-2|=2.So, mathematically, we take the absolute value of the result. For example, -0.45 would interpreted as 0.45. This means that, along the demand curve between points B and A, if the price changes by 1%, the quantity demanded will change by 0.45%. A change in the price will result in a smaller percentage change in the quantity demanded.Jul 24, 2023 · This page titled 1.2: Solving Absolute Value Equations is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by OpenStax via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. A. Solve absolute value equations by isolating the absolute value expression and then use both positive and negative answers to solve for the variable. Your variable will most likely equal two different values. Ex. 2|x - 3| = 14. First, isolate the absolute value expression by dividing both sides by 2. |x - 3| = 7. Unit 10: Absolute value & piecewise functions. Piecewise functions piece together different functions. Absolute value graphs make a V shape, but why do they do that? Let's explore how to make some new and interesting types of graphs. Mean absolute deviation describes the average distance between the values in a data set and the mean of the set. For example, a data set with a mean average deviation of 3.2 has values that are on average 3.2 units away from the mean. A group of kids in town A has a bake sale every week for 5 weeks, making $40, $40, $50, $55, and $65. Their mean sales are ...For example, $ 2$ and $ -2$ are opposites. Remember that numbers with a larger absolute value can actually be smaller when the numbers are negative - for example, $ -6<-5$, and, in the case of fractions, $ \displaystyle -\frac {3} {4}<-\frac {1} {2}$. So if we're comparing negative numbers, it's actually backwards compared to what we're ...Absolute Value is a boutique search firm that finds outstanding B2B sales and marketing talent for SaaS, information services, and technology-enabled businesses - from senior leadership to individual contributors. The Absolute-Value team is made up of former sales and marketing leaders. We've built high-performing sales and marketing teams ...The absolute value of a number is its distance from zero on a number line, regardless of the direction. So, the absolute value of -1/4, represented as |-1/4|, is simply 1/4. This is because if we were to place -1/4 on a number line, regardless of its negative status, it would still be 1/4 units away from zero, hence its absolute value is 1/4.So if we want to sort it from least to greatest, well, we just have to start at the left end of the number line. The smallest of them, or the least of them, is -28. Then we go to -17. -17. Then we go to 22.4. Then we go to 22.4. And then we go to the absolute …The absolute value of a real number is the distance of the number from 0 0 on a number line. The absolute value of x x is written as \left|x\right|. ∣x∣. For example, \left|5\right| = \left|-5\right| = 5. ∣5∣ = ∣−5∣ = 5. This is a special case of the magnitude of a complex number.For its absolute value, i.e |z| = |-4 +i4| Which is the distance of this point in the Argand plane from the origin. for calculating the absolute value of any imaginary point Z = x+iy, |Z| = |x+iy| |Z| = sqrt (x^2 + y^2) Use the above concepts and find the absolute value of the above imaginary point on your own.2.2: Absolute Value. Every real number can be represented by a point on the real number line. The distance from a number (point) on the real line to the origin (zero) is what we called the magnitude (weight) of that number in Chapter 1. Mathematically, this is called the absolute value of the number. So, for example, the distance from the point ...The number doctors look at is called your absolute neutrophil count (ANC). For a healthy person, the normal range for an ANC is between 2,500 and 6,000. The ANC is found by multiplying the WBC count by the percent of neutrophils in the blood. For instance, if the WBC count is 8,000 and 50% of the WBCs are neutrophils, the ANC is 4,000 (8,000 × ...For example, the absolute value of the number 3 and -3 is the same (3) because they are equally far from zero: From the above visual, you can figure out that: The absolute value of a positive number is the number itself. The absolute value of a negative number is the number without its negative sign. The absolute value of zero is 0. Easy!Simplifying expression with absolute value and unknown. 13. Derivatives of functions involving absolute value. 3. The contradiction method used to prove that the square root of a prime is irrational. 1. Solving absolute value equation in complex numbers. 32. Calculating the square root of 2. 0.But, presumably, the most important natural logarithm is the one that calculates the value of a number between 1 and e, which turns out to be the number 2. Using the natural log calculator, we get. ln 2 = 0.6931. It turns out that ln 2 is also equal to the alternating sum of reciprocals of all natural numbers: ln 2 = 1 - 1/2 + 1/3 - 1/4 + 1 ...MAD Process: (1) Find the mean (average) of the set. (2) Subtract each data value from the mean to find its distance from the mean. (3) Turn all distances to positive values (take the absolute value). (4) Add all of the distances. (5) Divide by the number of pieces of data (for population MAD).$\begingroup$ "To do it analytically, get rid of the absolute value: x^2−4≥0 if and only if −2≤x≤2" Shouldn't the inequality for this part be <0 or am I missing something? $\endgroup$ - Oofy2000. Mar 9, 2023 at 23:28Figure 1.3.1.1 1.3.1. 1. Jeremiah just moved to Boston with his family. He wants to practice Aikido, but he's not sure which dojo to pick. The distance on the bus is probably the deciding factor, but some of them are Outbound, some are Inbound, and some are both. He lives near the Washington St. stop on the Green Line.The standard absolute value graph y=|x| has its vertex at (0, 0). If you want to change the point to be at (3,0), that means you are making x=3. Notice, these are on opposite sides of the "=". if you need to place them on the same side of the "=", then you would have x-3=0.Yes. In general, to solve an equation with an absolute value: Perform inverse operations until the absolute value stands by itself on one side of the equation--the equation should be of the form| expression | = c. If c is negative, the equation has no solution . Separate into two equations: expression = c or expression = -c Note that "or ...For example, the numbers 2 and -2 have a distance of 2 from 0, so their absolute value is the same, even though their sign is not: |2| = 2. |-2| = 2. The absolute value of 0 is 0. The absolute value function, f (x) = |x|, can be described as a piecewise function: f (x) =. -x, x < 0.So if we want to sort it from least to greatest, well, we just have to start at the left end of the number line. The smallest of them, or the least of them, is -28. Then we go to -17. -17. Then we go to 22.4. Then we go to 22.4. And then we go to the absolute …An eosinophil count uses a standard blood draw. As with any blood test, there are minimal risks of experiencing minor bruising at the needle site. In rare cases, the vein may become swollen after ... Correct answer: f (x) = x 4 + (1 – x) 2. Explanation: When we take the absolute value of a function, any negative values get changed into positive values. Essentially, | f ( x )| will take all of the negative values of f ( x) and reflect them across the x -axis. However, any values of f ( x) that are positive or equal to zero will not be ... Scale & reflect absolute value graphs. The graph of y = | x | is scaled vertically by a factor of 6 . What is the equation of the new graph? Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more.As you may have seen from other replies, for solving such problems you have to divide the equation into "regimes", based on the expression (s) of x that are enclosed in absolute value brackets. Based on your equation, we have three regimes: (i) x >= 1 (ii) 1/2 <= x < 1 (iii) x < 1/2. For (i): the equation becomes x - 1 > 2x - 1, giving x < 0.Absolute Value Equations Practice Problems with Answers. There are eleven (11) practice problems in this collection regarding absolute value equations. Whether you're a beginner or seeking a challenge, there's something here for you. As you tackle each problem, remember that in every attempt, right or wrong, fuels your mathematical growth.The complex number is, We know that, The absolute value of a complex number x + iy, is defined as the distance between the origin (0, 0) and the point (x, y) in the complex plane. Its value is calculated by, Now, by using the above formula the absolute value of the complex number is, ⇒ =. To learn more about absolute value visit:3.5: Absolute Value Functions. There are a few ways to describe what is meant by the absolute value | x | of a real number x. You may have been taught that | x | is the distance from the real number x to 0 on the number line. So, for example, | 5 | = 5 and | − 5 | = 5, since each is 5 units from 0 on the number line.You can see whether x=2 is a local maximum or minimum by using either the First Derivative Test (testing whether f'(x) changes sign at x=2) or the Second Derivative Test (determining whether f"(2) is positive or negative). However, neither of these will tell you whether f(2) is an absolute maximum or minimum on the closed interval [1, 4], which is what the Extreme Value Theorem is talking ...Let's take a look at an easier, well shorter anyway, problem with a different kind of boundary. Example 2 Find the absolute minimum and absolute maximum of f (x,y) = 2x2 −y2 +6y f ( x, y) = 2 x 2 − y 2 + 6 y on the disk of radius 4, x2+y2 ≤ 16 x 2 + y 2 ≤ 16. Show Solution. In both of these examples one of the absolute extrema ...Assuming "absolute value" is a math function | Use as referring to a mathematical definition instead. Input. Plots. Alternate form assuming x>0. Alternate form assuming x is real. Root. Step-by-step solution; Properties as a real function. Domain. Range. Parity. Derivative. Step-by-step solution;Sep 29, 2019 · The absolute value of 4 - 7i is sqrt(65). Explanation: To find the absolute value of a complex number, we need to calculate its magnitude, which is given by the distance from the origin to the point representing the complex number on the complex plane. For the complex number 4 - 7i, the absolute value is: For example, the absolute value of 4 is 4 : − 5 − 4 − 3 − 2 − 1 0 1 2 3 4 5 4. This seems kind of obvious. Of course the distance from 0 to 4 is 4 . Where absolute value gets …Absolute Value I am having an issue with finding the max value of positive and negative values. I want it to always pick the highest integer but to have it's sign remain the same. For instance, x=10, y=15, z=-20 are my numbers calculated that . t:=550*[max(x,y,z)] -p is depended on. if I do r:= max(x,y,z) it will state that r=15 when I need it ...Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more.Absolute Value is a boutique search firm that finds outstanding B2B sales and marketing talent for SaaS, information services, and technology-enabled businesses - from senior leadership to individual contributors. The Absolute-Value team is made up of former sales and marketing leaders. We've built high-performing sales and marketing teams ...
The general form of an absolute value function is f (x)=a|x-h|+k. From this form, we can draw graphs. This article reviews how to draw the graphs of absolute value functions. General form of an absolute value equation: f ( x) = a | x − h | + k. The variable a tells us how far the graph stretches vertically, and whether the graph opens up or .... London from boston
The absolute value of a Single is its numeric value without its sign. For example, the absolute value of both 1.2e-03 and -1.2e03 is 1.2e03. If value is equal to NegativeInfinity or PositiveInfinity, the return value is PositiveInfinity. If value is equal to NaN, the return value is NaN.If the number is not negative then the absolute value of the number is itself. Thus the absolute value of 6 is 6, the absolute value of 1/3 is 1/3 and the absolute value of 0 is 0. If the number is negative then to find the absolute value you just drop the negative sign. Thus the absolute value of -2 is 2 and the absolute value of -1/7 is 1/7 ...👉 Learn how to graph absolute value equations when we have a value of b other than 1. B will affect our horizontal shift as well as horizontal stretch compr...The absolute value of a number is its non-negative value without regard to its sign. [Math]::Abs(-5) Absolute value function. Trigonometric functions. Trigonometric functions apply to calculations related to angles. I suppose you remember them well from school. Sine [Math]::Sin(90) Cosine [Math]::Cos(90)fabs () function of math.h header file in C programming is used to get the absolute value of a floating point number. This function returns the absolute value in double. Syntax: double fabs (double a); Parameter: It will take a single parameter which is to be converted to an absolute value. Return Value: While passing values to fabs (), we can ...The numbers that have an absolute value of 4.6 are 4.6 and -4.6. This is because absolute value refers to the distance a number is from zero on the number line, regardless of direction. In Mathematics, the absolute value of a number is its distance from zero on the number line and is always nonnegative. In this case, you're asked to find ...4-bit absolute-value detector (AVD), as one of the basic implementations of bit arithmetic with logic circuits, can help grab a better understanding about digital integrated circuits. Conventional 4-bit AVDs scheme in a multi-comparator and multiplexers, or need to consider multiple situations of overflow and carry-in, both of which could make ...Absolute Operator @ Besides the ABS() function, you can use the absolute operator @: @ expression. In this syntax, the @ operator returns the absolute value of the expression. Examples. The following example shows how to use the ABS() function to calculate the absolute value of a number: SELECT ABS (-10.25) result; Code language: CSS (css) The ...Free Functions Absolute Extreme Points Calculator - find functions absolute extreme points step-by-stepFree online graphing calculator - graph functions, conics, and inequalities interactively.The general form of an absolute value function is f (x)=a|x-h|+k. From this form, we can draw graphs. This article reviews how to draw the graphs of absolute value functions. General form of an absolute value equation: f ( x) = a | x − h | + k. The variable a tells us how far the graph stretches vertically, and whether the graph opens up or ....