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Ch 3: McDougal Littell Algebra 2 Chapter 3: Systems of Linear Equations and Inequalities

About This Chapter

The Systems of Linear Equations and Inequalities chapter of this McDougal Littell Algebra 2 textbook companion course helps students learn the essential algebra 2 lessons of systems of linear equations and inequalities. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Systems of Linear Equations and Inequalities textbook chapter.

How it works:

  • Identify the lessons in the McDougal Littell Algebra 2 Systems of Linear Equations and Inequalities chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the systems of linear equations and inequalities topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Systems of equations
  • Systems of linear equations in two variables
  • Systems of linear inequalities
  • Graphs of systems of linear inequalities
  • Linear programming
  • Systems of linear equations in three variables

McDougal Littell Algebra 2 is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

5 Lessons in Chapter 3: McDougal Littell Algebra 2 Chapter 3: Systems of Linear Equations and Inequalities
Test your knowledge with a 30-question chapter practice test
What is a System of Equations?

1. What is a System of Equations?

So what happens if we want to compare more than one equation? Welcome to a 'system' of equations! Learn what one is, how to solve them and when they come up in real life.

How Do I Use a System of Equations?

2. How Do I Use a System of Equations?

There are a few classic algebra word problems, such as the one about two trains traveling at different speeds. In this lesson, you'll learn how to take a word problem and convert it into the system of equations that will allow you to find the answer using either substitution or elimination.

How to Solve a System of Linear Equations in Two Variables

3. How to Solve a System of Linear Equations in Two Variables

Watch this video lesson to learn how you can solve a system of linear equations in two variables by using the substitution method. Learn how easy it is to use on any linear system in two variables.

Solving Problems Involving Systems of Equations

4. Solving Problems Involving Systems of Equations

Did you ever encounter a problem where you seem to have lots of information, but still have a couple of critical numbers missing? In this lesson, we'll practice solving word problems that require us to set up systems of equations.

How to Solve a Linear System in Three Variables With No or Infinite Solutions

5. How to Solve a Linear System in Three Variables With No or Infinite Solutions

In this video lesson, you will learn to recognize when a linear system has no solution or an infinite number of solutions. You will also learn how to go about solving each of these types of systems.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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