Which of the following is the inverse

Question

asked Jan 25, 2019 85.0k views

2 Answers

Teyam · Answer 1 · 2019-02-01T00:04:55+0000

Given function is f(x) = 9x or y = 9x.

First step is to find the inverse is switch x and y. Therefore, the above equation will be:

x = 9y.

Next step is to solve the equation for y to get the inverse of f(x). So, divide each sides by 9 to isolate y. Hence,

(x)/(9) =(9y)/(9)

y =
(x)/(9)

So, the correct choice is A:
f^-1(x)=(x)/(9)