7th Grade Pre-AlgebraChapter 7: Linear Equations

Chapter 7-2Writing Equations in Point-

Slope Form

Terms and Concepts (A) A Linear equation accounts for all of the

points that lie on the line that it describes.

To determine if a point is on the line, plug the coordinates into the linear equation.

If a true statement results, then the point is on the line described by the linear equation.

The equation of a line can be written if the slope and the coordinates of at least one point are known.

Terms and Concepts (B) Linear equations expressed in point-

slope form look like: y – y1 = m(x – x1).

Simply plug in the known values for the corresponding variables once the equation is known.

Class assignment

Work the examples on pages 290-292 Problems 1-3

Work on pages 293-294 Problems 2-34 (even)

Homework assignment

Do page 42 (1-15, all) in the workbook.