Question

2 Points

If y(x) = x - 2, which of the following is the inverse of Ax)?
O . F'(x) = 2 - x
O B. f'(x) = x-2
O c. f'(x) = 2x
OD. F'(x) = x+2

Answer 1

D

Explanation:

let y = x - 2 and rearrange making x the subject, that is

y = x - 2 ( add 2 to both sides )

y + 2 = x

now change x to
`f^(-1)` (x) and y back to x, thus

`f^(-1)`(x) = x + 2 → D