91Ó°ÊÓ

find an equation of a line parallel to the line y=3x+4 and contains the point (2,5). Write the equation in slope–intercept form.

find an equation of a line parallel to the line y= -2x-3 and contains the point (-1,3). Write the equation in slope–intercept form.

Explain in your own words why the slopes of two perpendicular lines must have opposite signs.

Write the inequality shown by the graph with the boundary line y = 3x − 4.

Write the inequality shown by the graph with the boundary line y=2x - 4.

In the following exercises, find the x- and y-intercepts.

In the following exercises, graph by plotting points.

$y=x+2$