Question

If Fx) = 7x, which of the following is the inverse of (Fx)?

A. F^1(x) = x/7
B. F^1(x) = 7x
C. F^1(x) = x-7
D. F^1(x) = x+7

Answer 1

A. F^1(x) = x/7

Explanation:

`y = 7x \\ x = 7y \\ (x)/(7) = (7y)/(7)`

`y = (x)/(7)`

Therefore the inverse is

`f {}^(1) = (x)/(7)`