Question

Select the pair of slopes that are the slopes of perpendicular lines.

3 and 1/3
7/8 and -7/8
1/4 and 1/4
-2/3 and 3/2

Answer 1

-2/3 & 3/2 because their product is -1

Answer 2

1/4 and 1/4

Explanation:

This is the answer because the slope of one perpendicular line is the same for the other.