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Absolute Value Functions: Graphs, Rules & Examples

NL.SO.2200AN2

Conversion between entire radicals and mixed radicals

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Adding and subtracting radicals

Combining Like Radicals

Adding and Subtracting Radicals

Multiplying radicals

Multiplying Radicals

Operations with radicals

Operations with Radicals

Dividing radicals

Rationalize the denominator

NL.SO.2200AN3

Solving radical equations

Solving Radical Equations Involving One Square Root Term

Solving Radical Equations Involving More than One Square Root Term

NL.SO.2200AN4

Partial fraction decomposition

Simplifying rational expressions and restrictions

NL.SO.2200AN5

Adding and subtracting rational expressions

Adding and Subtracting Rational Expressions

Multiplying rational expressions

Multiplying Rational Expressions

Multiplying Rational Expressions in Factored Form

Dividing rational expressions

Dividing Rational Expressions

Dividing Rational Expressions in Factored Form

Simplifying complex fractions

NL.SO.2200AN6

Solving rational equations

Applications of rational equations

NL.SO.2200RF1

Factoring difference of cubes

Factoring sum of cubes

Factor by taking out the greatest common factor

Factor by taking out GCF

Factor by grouping

Factoring difference of squares: \(x^2 - y^2\)

Factoring difference of squares: <katex>x^2 - y^2</katex>

Factoring difference of squares: x^2 - y^2

Factoring trinomials

Factoring Trinomials

NL.SO.2200RF10

Geometric sequences

Geometric series

Geometric Series

Infinite geometric series

NL.SO.2200RF11

Graphing reciprocals of linear functions

Sigma notation

Graphing reciprocals of quadratic functions

NL.SO.2200RF2

Absolute value functions

Expressing an Absolute Value Linear Function as a Piecewise Function

Expressing an Absolute Value Quadratic Function as a Piecewise Function

Solving absolute value equations

Solving absolute value inequalities

Solving Absolute Value Inequalities Involving "less than"

Solving Absolute Value Inequalities Involving "greater than"

Recognizing Absolute Value Inequalities with "No Solution" or "All Real Numbers"

NL.SO.2200RF3

Characteristics of quadratic functions

Transformations of quadratic functions

Quadratic function in general form: y = ax^2 + bx + c

Converting from general to vertex form by completing the square

Shortcut: Vertex formula

Converting general form into vertex form by applying the vertex formula

Vertex Formula Application

Graphing quadratic functions: General form VS. Vertex form

Finding the quadratic functions for given parabolas

Quadratic function in vertex form: y = a(x-p)^2 + q

NL.SO.2200RF4

Applications of quadratic functions

Solving quadratic equations by factoring

Solving quadratic equations by completing the square

Using quadratic formula to solve quadratic equations

Solving a quadratic equation with TWO REAL SOLUTIONS

Solving a quadratic equation with TWO COMPLEX SOLUTIONS

Completing the square

Completing the Square

NL.SO.2200RF5

Solving polynomial equations by iteration

Nature of roots of quadratic equations: The discriminant

Applications of quadratic equations

NL.SO.2200RF6

System of linear equations

System of linear-quadratic equations

System of quadratic-quadratic equations

NL.SO.2200RF7

Graphing linear inequalities in two variables

Graphing quadratic inequalities in two variables

Graphing systems of quadratic inequalities

What is a logarithm?

Logarithms and Exponential Growth

Understanding Logarithms through Exponential Growth

Understanding Logarithms

Converting from logarithmic form to exponential form

Evaluating logarithms without a calculator

Common logarithms

Natural log: ln

Evaluating logarithms using change-of-base formula

NL.SO.2200RF8

Solving quadratic inequalities

NL.SO.2200RF9

Arithmetic sequences

Arithmetic series

Arithmetic series formula

Graphing systems of linear inequalities

Applications of inequalities

NL.SO.2200T1

Angle in standard position

Coterminal angles

Coterminal Angles

Reference angle

NL.SO.2200T2

Unit circle

Find the exact value of trigonometric ratios

ASTC rule in trigonometry (All Students Take Calculus)

ASTC rule in trigonometry

Converting between degrees and radians

Trigonometric ratios of angles in radians

Radian measure and arc length

NL.SO.2200T3

Law of sines

Ambiguous case: SSA triangles

Law of cosines

Applications of the sine law and cosine law

Parent Assignments

Challenge Zone

Foundation Review

Advanced Mathematics 2200

Algebra and Number

Relations and Functions

math

Evaluating absolute value expressions with arithmetic and cube roots

Piecewise form of absolute value with a quadratic expression

Evaluating absolute value of positive, negative, and zero values

Expressing |5 - 4x| as a piecewise function

A clear walkthrough of absolute value functions: the parent function f(x) = |x|, its V-shaped graph, the piecewise definition behind it, and how adding, subtracting, or multiplying numbers shifts, stretches, or flips the graph.

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Overview

Absolute Value Function and Graph

What You'll Learn

An absolute value function always outputs a distance from zero, so its value can never be negative.

The parent function f(x) = |x| graphs as a V shape with its vertex at the origin.

Every absolute value function can be rewritten as a piecewise function with two linear pieces.

The form f(x) = a|x - h| + k moves the vertex to (h, k) and controls how wide or narrow, and which way up, the V opens.

Reading a table of values is one of the most reliable ways to plot an absolute value graph by hand.

What You'll Practice

Evaluating absolute values of integers, negatives, and nested expressions

Converting absolute value of linear expressions into two-piece piecewise functions

Converting absolute value of quadratic expressions into three-piece piecewise functions

Using test values to determine signs across different domain regions

Why This Matters

Before You Start — Make Sure You Can:

This Unit Includes

4 Video lessons

Practice exercises

Learning resources

Skills

Absolute Value

Piecewise Functions

Number Line

Domain Analysis

Quadratic Expressions

Sign Rules

Function Notation