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Ch 9: Calculating & Graphing Inequalities

About This Chapter

Use our video lessons to learn about inequalities. Find out about methods of graphing several types of inequalities and work practice problems to solve inequalities.

Calculating & Graphing Inequalities - Chapter Summary

This chapter's lessons review inequalities and how to graph them. Our instructors will explain what set notation, compound inequalities, absolute inequalities and systems of inequalities are, then offer practice problems for graphing each type. You'll see how to solve word problems that use inequalities and get practice solving inequalities. After watching all the lessons, you should be ready to:

  • Define an inequality
  • Graph one- and two-variable inequalities
  • Describe set notation, compound inequalities and systems of inequalities
  • Solve and graph absolute value inequalities
  • Translate math sentences to inequalities

Our instructors use brief lessons to simplify these concepts. They've also designed short quizzes that let you assess what you've learned. If you need to go back and review a particular topic, the jump feature in the timeline lets you quickly find the segment you need without having to re-watch the whole lesson. Still have questions? You can contact the instructor for more information.

8 Lessons in Chapter 9: Calculating & Graphing Inequalities
What is an Inequality?

1. What is an Inequality?

Deciding how to spend your money can be a tricky thing. Should you save it, invest it, or enjoy it? Learn how inequalities can help you make your decision!

How to Graph 1- and 2-Variable Inequalities

2. How to Graph 1- and 2-Variable Inequalities

So an inequality is just an equation with a less than or greater than symbol. But what is the difference between 1 and 2 variable inequalities? What does have a greater than or equal to symbol change? When do you use a number line instead of a coordinate plane? Get those answers here!

Set Notation, Compound Inequalities, and Systems of Inequalities

3. Set Notation, Compound Inequalities, and Systems of Inequalities

In this lesson, we'll explore the conditions of compound inequalities and learn how to express them using set notation and interval notation. Test you knowledge afterward with a short quiz.

Graphing Inequalities: Practice Problems

4. Graphing Inequalities: Practice Problems

If you're already pretty familiar with what inequalities are and just looking for a place to practice your skills, this is the place. This lesson covers topics like 1-variable, 2-variable, compound, and systems of inequalities.

How to Solve and Graph an Absolute Value Inequality

5. How to Solve and Graph an Absolute Value Inequality

Taking two skills and combining them to make a more complicated problem is a classic tactic in mathematics. If you feel confident with absolute values and inequalities, see if you can tackle them with their powers combined here!

Solving and Graphing Absolute Value Inequalities: Practice Problems

6. Solving and Graphing Absolute Value Inequalities: Practice Problems

Solving and graphing absolute value inequalities brings a lot of different skills together in one place. The practice problems in this video will give you a good chance to see more examples of absolute value inequalities but will also test your general algebraic knowledge.

Translating Math Sentences to Inequalities

7. Translating Math Sentences to Inequalities

Watch this video lesson to learn how you can easily translate math sentences into inequalities. Once you know how to do this, solving word problems becomes that much easier.

Solving Linear Inequalities: Practice Problems

8. Solving Linear Inequalities: Practice Problems

Linear inequalities may look intimidating, but they're really not much different than linear equations. In this lesson, we'll practice solving a variety of linear inequalities.

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