Dejah is proving that perpendicular lines have slopes that are opposite reciprocals. She draws line s and labels two points on the line
as (-a, 0) and (0, 6).
Enter the answers, in simplest form, in the boxes to complete the proof.
The slope of line s is
Rotate line s 90° clockwise about the origin to get line t. The labeled points on line
s map to (0, a) and
on line t. The slope of line t is
The slopes of the lines are opposite
reciprocals because the product of the slopes is