Question

If F(x) = x-3, which of the following is the inverse of F(x)?

Answer 1

Answer:

B

Step-by-step explanation:

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

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

y + 3 = x

change y back into terms of x, then

$f^{-1}$(x) = x + 3 → B

Answer 2

Answer:

B.

Step-by-step explanation:

Let y = x - 3

x = y + 3

f-1(x) = x + 3.