Question

100 O () = 97 +18 or()- +2 x= + OF (x) = 97 +2 F(x) = -27 + - 10

Answer 1

Answer:

first option

Step-by-step explanation:

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

y = $\frac{1}{9}$ x - 2 ( add 2 to both sides )

y + 2 = $\frac{1}{9}$ x ( multiply through by 9 to clear the fraction )

9y + 18 = x

change y back into terms of x with x = $f^{-1}$ (x) , then

$f^{-1}$ (x) = 9x + 18

Answer 2

Answer:

9x+2

Step-by-step explanation:

the inverse of the function is the opposite. 1/9 becomes 9 and negative 2 becomes positive 2