Write an equation in slope intercept form perpendicular to:

Question

-2x+8y=16 and goes through (4,5)

Answer 1

Slope of given line = 2/8 = 1/4
so the slope of the new line = -4

y = -4x + b , but (4,5) is on it, so ...
5 = -4(4) + b
b = 21

y = -4x + 21