Question

Which of the following is the inverse

Answer 1

y = x/9

Explanation:

Answer 2

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)`