Find the inverse function of m(x) = 5x - 5

Question

Answer choices

A. m^-1(x) = 5x + 5

B. m^-1(x) = -5x + 5

C. m^-1(x) = 

D. m^-1(x) = x

Answer 1

Hey Brianna!

In order to find the inverse of a function, we flip it over the line y=x, or we switch the x and y values in the equation and solve it for y. So let's do the latter:

m(x) = 5x - 5

y = 5x - 5

x = 5y - 5

5y = x + 5

y = (x + 5)/5

Therefore the answer is C