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Ch 3: Absolute Value

About This Chapter

Watch video lessons and improve your skills in working with absolute values. Practice finding the absolute values of numbers, evaluating absolute value expressions and graphing transformations.

Absolute Value - Chapter Summary

If you need to review absolute value, this chapter's video lessons can help. Our professional instructors explain how to determine a number's absolute value and also guide you through the steps needed for solving absolute value equations. In addition, you'll take a look at graphing absolute values. After you've watched all of the video lessons, you should be able to:

  • Define absolute value
  • Find the absolute value of a real number
  • Determine the absolute value of a rational number
  • Evaluate absolute value expressions
  • Solve absolute value equations
  • Graph absolute value equations
  • Work with transformations

Our lessons include step-by-step instructions on answering absolute value problems as well as opportunities for you to gain some practice solving them. The engaging videos are usually just a few minutes long and they contain a timeline with a jump feature so you can rewatch portions while studying. Each lesson also has a transcript and a multiple-choice quiz, which you can take to test your understanding of absolute value.

8 Lessons in Chapter 3: Absolute Value
Test your knowledge with a 30-question chapter practice test
What is an Absolute Value?

1. What is an Absolute Value?

When we're talking and comparing numbers, we often don't care whether its positive or negative, just how big it is. This is often called the magnitude of a number and we find it by taking the absolute value. Learn all about it here!

Finding the Absolute Value of a Real Number

2. Finding the Absolute Value of a Real Number

You can find the absolute value of any real number. This lesson will define absolute value, explain what real numbers are and give the steps to finding the absolute value of any real number.

Finding the Absolute Value of a Rational Number

3. Finding the Absolute Value of a Rational Number

Watch this video lesson and you will learn how to deal with absolute values of simple numbers and more complex problems. Learn the order in which you should do calculations so that your answers are correct.

How to Evaluate Absolute Value Expressions

4. How to Evaluate Absolute Value Expressions

Substituting values into absolute values doesn't have to be too hard, but it can be if you're given deceiving beginning information. See if you're up to it by checking out this video!

How to Solve an Absolute Value Equation

5. How to Solve an Absolute Value Equation

Once you get familiar with any new operation, the next step in any algebra class is to learn how to solve equations with that operation in them. Absolute values are no different. Solve absolute value equations here!

Solving Absolute Value Practice Problems

6. Solving Absolute Value Practice Problems

There are many easy mistakes to make when solving absolute value equations. Learn how to avoid those mistakes here by working on examples of absolute value equations with operations on the inside and the outside of the absolute value.

How to Graph an Absolute Value and Do Transformations

7. How to Graph an Absolute Value and Do Transformations

Absolute value graphs normally look like the letter 'V', but transformations can change that 'V' in a number of different ways. As well as teaching you how to graph absolute values, this video will focus on a specific group of transformations called translations. Learn all about what that means here!

Graphing Absolute Value Equations: Dilations & Reflections

8. Graphing Absolute Value Equations: Dilations & Reflections

Although a basic absolute value graph isn't complicated, transformations can make them sufficiently confusing! In this lesson, you'll practice different transformations of absolute value graphs.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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