7th Grade Pre-AlgebraChapter 7: Linear Equations

Chapter 7-3Writing Equations in Slope-

Intercept Form

Terms and Concepts (A) Y intercept: the point at which a line

crosses the y axis. The x coordinate of this point is 0.

X intercept: the point at which a line crosses the x axis. The y coordinate of this point is 0.

The equation of a line can be written using slope and the y intercept.

This type of equation is known as slope-intercept form.

Terms and Concepts (B) Slope-intercept form: y = mx + b.

The y coordinate of the y intercept is represented by “b”.

See page 296 for the derivation of this form.

Class assignment

Work the examples on pages 296-298 Problems 1-5

Work on pages 299-300 Problems 4-42 (even)

Homework assignment

Do page 43 (1-27, all) in the workbook.