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

Question

Donna Matthews

Mathematics

8 February, 12:11

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

+1

Answers (2)

Know the Answer?

Sawyer Walters · Answer 1

Sawyer Walters 8 February, 12:21

0

It would be 0.8, ongoing.

Kara · Answer 2

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

Step-by-step 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)