**Introduction**

In this chapter you learn about relations defined by

To write the equation of a line, you must know the slope and the

When these basic concepts have been mastered, you will learn how to determine the equation of lines that are parallel and perpendicular to the

Finally, all of the concepts will be applied to problems that use linear functions as a model.

**Lessons**

In this chapter you will do the following lessons:

- The Slope of a Line from a Graph or from Two Points
- The Equation of a Line in Slope-Intercept Form
- Graphing the Linear Functions
y=mx+b; y=a; x=a - Determining the Equation of a line from the Graph
- Parallel and Perpendicular Lines
- Linear Function as a Model

## Chapter Outline

- 4.1. The Slope of a Line from a Graph or from Two Points
- 4.2. The Equation of a Line in Slope – Intercept Form
- 4.3. Quiz I
- 4.4. Graphing the Linear Functions y = mx + b; y = a; x = a
- 4.5. Determining the Equation of a Line from the Graph
- 4.6. Parallel and Perpendicular Lines
- 4.7. Quiz II
- 4.8. Linear Function as a Model
- 4.9. Chapter Test

### Chapter Summary

### Image Attributions

## Description

## Difficulty Level:

Advanced## Authors:

## Subjects:

## Date Created:

Dec 23, 2014## Last Modified:

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