Question

Find the equation of the linear function k that has k(-20) = -17 and that is perpendicular to m (r) = 1/4r+36

Answer 1

Answer: k(x)=-4x+63

Explanation:

Perpendicular slopes are opposite reciprocals of each other.

(1/4)^(-1)=4

4*(-1)=-4

k(x)=4x+b

k(-20)=4(-20)+b

-17=4(-20)+b

-17=-80+b

b=63

k(x)=-4x+63