Ch 15: Compass Math: Inequalities

About This Chapter

Let us remind you of what you have learned about inequalities. Watch our video lessons to get ready to take the ACT Compass Math college course placement test. This chapter also includes short quizzes.

Compass Math: Inequalities - Chapter Summary

Use this chapter and its video lessons to prepare for the ACT Compass Math test. Our experienced instructors guide you through the process of solving and graphing inequalities. Lessons in this chapter discuss the following topics:

  • Defining inequalities
  • Exploring set notation, compound inequalities and systems of inequalities
  • Graphing 1- and 2-variable inequalities
  • Solving and graphing an absolute value inequality

Our lessons appeal to all types of learners. The instructors offer compelling lessons and engaging visuals to make studying fun. You can re-watch the videos as often as you'd like or use video tags to jump to the main ideas of a lesson. Read lesson transcripts as an alternative tool to review what the instructors discussed in each lesson.

Compass Math: Inequalities Chapter Objectives

The ACT Compass Math test is used by colleges to help evaluate students' math skills and place them into the appropriate math courses. The test is computerized and untimed. All test questions use a multiple-choice answer format.

Questions on inequalities may be asked on the numerical skills/pre-algebra and algebra portions of the test. Use our lesson quizzes to practice answering inequalities questions in the multiple-choice format.

6 Lessons in Chapter 15: Compass Math: Inequalities
Test your knowledge with a 30-question chapter practice test
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!

Set Notation, Compound Inequalities, and Systems of Inequalities

2. 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.

How to Graph 1- and 2-Variable Inequalities

3. 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!

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.

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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