Write an equation for a line perpendicular to y = 5 x − 5 y = 5 x - 5 and passing through the point (15,-6)

Answer 1

y = mx + b

The product of slopes of perpendicular lines is -1, so the slope of the perpendicular line is

m = -1/5

y = (-1/5)x + b

Find b from the given point.

-6 = (-1/5)(15) + b

-6 = -3 + b

b = -3

y = (-1/5)x - 3