Question

F(x) = -3x + 3, then f-1(x) =

Answer 1

Answer:

$f^{-1}$(x) = $\frac{3-x}{3}$

Step-by-step explanation:

Let y = f(x) and rearrange making x the subject, that is

y = - 3x + 3 ( add 3x to both sides )

3x + y = 3 ( subtract y from both sides )

3x = 3 - y ( divide both sides by 3 )

x = $\frac{3-y}{3}$

Change x back into terms of y

$f^{-1}$(x) = $\frac{3-x}{3}$