Question

If f(x) = 1/9 x-2 what is f-1(x)

Answer 1

It would be 0.8, ongoing.

Explanation:

Answer 2

f^-1(x) = 9(x+2)

Explanation:

y = 1/9 x -2

We want to find the inverse

Exchange x and y and then solve for y

Exchange x and y

x = 1/9 y -2

Now solve for y

Add 2 to each side

x+2 = 1/9y-2+2

x+2 = 1/9y

Multiply each side by 9

9*(x+2) = 1/9y*9

9(x+2) = y

This is the inverse

f^-1(x) = 9(x+2)