Question

If line p has a slope of 4/7, what is the slope of a line perpendicular to p?

(1). 4/7
(2). 7/4
(3). -4/7
(4). -7/4​

Answer 1

-7/4

Explanation:

When you find the perpendicular slope, you take the opposite reciprocal of the original slope. For 4/7, the opposite is -4/7, and the reciprocal of that is -7/4.