Question

Yoo i need help !!! its math and i havent learned it yet

Answer 1

Answer:

9x+18

Step-by-step explanation:

Let y=x/9 -2

or,9y+18=x

or,f(x)=9y+18

Then,f^-1(x)=9x+18

Answer 2

Answer:

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

Step-by-step explanation:

$f(x) = \frac{1}{9}x - 2$

$y = \frac{1}{9} x - 2$

$x = \frac{1}{9}y - 2$

$x + 2 = \frac{1}{9}y$

$9x + 18 = y$

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