Question

What is the slope of any line perpendicular to the line passing through `(-3,15)` and `(9,-3)`?

Answer 1

slope will be 2/3

Explanation:

the product of two perpendicular lines slope is -1 let us take slope of second line be m . the slope of first line = (15+3)/-12. therefore `m*(-3/2)=-1` from here the slope of the second line comes out to be 2/3