Question

What is the inverse of the function f(x) =1/4x – 12?

Answer 1

f(x) = 4x + 48

Explanation:

Replace the positions of x and y and isolate y to find the inverse of a function.

y = 1/4x – 12

x = 1/4y – 12

x + 12 = y/4

4(x + 12) = y

4x + 48 = y

f(x) = 4x + 48