Question

Find the inverse of the function f f (x )

equals 9 x + 7

Answer 1

Note: Your question seems a little bit ambiguous. So, I am assuming the given function f(x)=9x+7.

Thus, I am solving based on it. It would still clear your concept.

Answer:

The inverse of f(x)=9x+7

• 
  `(x-7)/(9)`

Explanation:

Given the function

`f(x)=9 x + 7`

A function g is the inverse of function f if for y=f(x), x=g(y)

Replace x with y

`x=9y+7`

solve for y

`9y=x-7`

`y=\:(x-7)/(9)`

Therefore,

The inverse of f(x)=9x+7 is:

• 
  `(x-7)/(9)`

i.e.

`\mathrm{Inverse\:of}\:9x+7:\quad (x-7)/(9)`