Question

If f(x)=3x-2 over 6 which of the following is the inverse of f(x)

Answer 1

set f(x) equal to y

y = 3x-2

swap x and y

x = 3y-2

rearrange to make y the subject

x+2 = 3y

$y = \frac{x + 2}{3}$

replace y with f^-1(x)