Lesson 3: Solving Linear Systems by Substitution
Module 7: Systems of Linear Equations
Launch
This section checks to see if you have the prerequisite knowledge and skills to be able to complete this lesson successfully.
Are You Ready?
Complete these questions in your binder. If you are experiencing difficulty, you may want to use the information and the multimedia in the Refresher section to clarify concepts before completing these exercises.
Once you have completed these exercises to the best of your ability, use the provided answer link to check your work.
Answers
If you feel comfortable with the concepts covered in the questions, move forward to Discover. If you experienced difficulties or want more practice, use the resources in Refresher to review these important concepts before continuing through the lesson or contact your teacher.
Refresher
The purpose of this section is to provide you with some resources to review in preparation for the lesson ahead. These resources may include videos, interactive applets, mini-lessons, and flash games to help you recall previously learned concepts. You can use these resources either before or after you try the questions in Are You Ready? Your teacher may also direct you to this section to review specific concepts.
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Visit Isolating a Variable to help you rearrange an equation.
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To see how to simplify an equation having fractions, look at Removing Fractions from an Equation.
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Read
To see how the distributive property can be used in multiplication, read an example from your textbook.
Foundations and Pre-calculus Mathematics 10 (Pearson)
Read “Example 1: Multiplying Two Binomials” on page 161.