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Ch 5: Proportional Relationships & Linear Equations

About This Chapter

Catch up on missed class time by reviewing the lessons on linear equations and proportional relationships in this engaging chapter. You can work through our fun video lessons and quizzes at your own pace as you get ready to take a quiz or finish your homework.

Proportional Relationships & Linear Equations - Chapter Summary

In this chapter, you'll review linear equations and proportional relationships as they're used in math. Topics include how proportions and ratios are calculated, finding the slope of a line and modeling a linear relationship between two quantities. Each lesson is followed by a multiple-choice quiz that can help you prepare for a test or a quiz. If you don't want to watch an entire video lesson, use the video tabs feature to skip ahead to the subject you'd like to review. Studying offline is easy with our printable lesson transcripts. Once you complete this chapter, you should be able to:

  • Solve practice problems involving ratio and proportion calculations
  • Give an example of what directly proportional means
  • Graph quantity values with constant ratios
  • Explain how standard form applies to linear equations
  • Understand the process used to evaluate and write real-life linear models

7 Lessons in Chapter 5: Proportional Relationships & Linear Equations
Test your knowledge with a 30-question chapter practice test
Practice Problems for Calculating Ratios and Proportions

1. Practice Problems for Calculating Ratios and Proportions

In this lesson, you'll get a quick review of a type of math problem that shows up on the SAT: ratios and proportions. We'll walk through some problems in the video, and you can test your skills in the quiz questions.

Directly Proportional: Definition, Equation & Examples

2. Directly Proportional: Definition, Equation & Examples

In this lesson, you will learn the definition of the mathematical expression 'directly proportional' and be able to apply this expression to solving problems that related two variables.

Graphing Quantity Values With Constant Ratios

3. Graphing Quantity Values With Constant Ratios

In this video lesson, you will see what the graph looks like when all your points have the same y:x or x:y ratio. You'll also learn how to write the equation of such a graph.

Linear Equations: Intercepts, Standard Form and Graphing

4. Linear Equations: Intercepts, Standard Form and Graphing

Do you know what to do if an equation doesn't look like y=mx+b?! If not, then this video is for you. Chances are the equation is in standard form, so we'll learn how to use standard form equations, how to graph them and why they can be helpful.

How to Find and Apply The Slope of a Line

5. How to Find and Apply The Slope of a Line

In this lesson, we'll discover all about the slopes of lines. We'll learn about different types of slopes and how to find the slopes of lines. We'll use two methods: the slope formula and the slope-intercept form.

Model a Linear Relationship Between Two Quantities

6. Model a Linear Relationship Between Two Quantities

In this lesson, we will learn about modeling linear relationships by converting domain and range values into ordered pairs and then constructing a graph.

Writing & Evaluating Real-Life Linear Models: Process & Examples

7. Writing & Evaluating Real-Life Linear Models: Process & Examples

You make decisions about budgeting and other financial issues using linear models without even realizing it. Learn how to write and evaluate linear models.

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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