Question

Which of the following lines is perpendicular to 3y=5x-1?

A. Y=5x+6
B. Y=5/3x-7
C. Y=3x-8
D. Y=-3/5x+9

Answer 1

Explanation:

D is

The given line should be divided by 3

3/3 y = 5/3 x - 1/3

y = 5/3 x - 1/3

So the line you are looking for has a slope of -1/(5/3) = - 3/5. In other words to be perpendicular the slopes have to multiply to - 1

5/3 * - 3/5 = - 1

That makes D the correct answer.