The equation of line AB is (y-3) = 5 (x - 4). What is the slope of a line perpendicular to line AB?

-5

5

-1/5

1/5

The perpendicular slope would be - 1/5.

Step-by-step explanation:

This is because we can locate the slope of the original line as 5 (the number just outside of the x-coordinate parenthesis.

Then we know that perpendicular lines have opposite and reciprocal slopes. So we take the 5 and change the sign (-5), then we flip it (-1/5).