<meta http-equiv="refresh" content="1; url=/nojavascript/">
You are reading an older version of this FlexBook® textbook: CK-12 Algebra I - Honors Go to the latest version.

# Chapter 4: Name That Line

Difficulty Level: Advanced Created by: CK-12

Introduction

In this chapter you learn about relations defined by $y=mx+b$. You will learn how to rewrite an equation given in the form $Ax +By+C=0$ in the form $y=mx+b$. You will learn to graph $y=mx+b$ by using the point-slope method as well as how to write the equation of a line from the graph by determining the slope and the $y-$intercept.

To write the equation of a line, you must know the slope and the $y-$intercept of the line. In this chapter you will learn how to calculate the slope of a line from two given points on the line, from a given equation, from a point on the line and the $y-$intercept and from the relationship between special lines. In addition, you will learn how to determine the $y-$intercept of a line algebraically.

When these basic concepts have been mastered, you will learn how to determine the equation of lines that are parallel and perpendicular to the $x$ and $y$ axis or to other lines.

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

Aug 20, 2013