Question

If f(x) = 1/9x - 2 , what is f–1(x)?

Answer 1

is it \[\huge\rm \frac{ 1 }{ 9x-2 } ~~~or~~\frac{ 1 }{ 9x}-2\]

Answer 2

??

Answer 3

1/9x + 2 is one of the answer

Answer 4

no i'm asking which one is your question first one or 2nd ?is it \[\huge\rm \frac{ 1 }{ 9x-2 } ~~~or~~\frac{ 1 }{ 9x}-2\]

Answer 5

Oh, the second one.

Answer 6

alright
so to find inverse switch `y` and `x` variable
f(x) is same as y so \[\huge\rm \color{reD}{y}=\frac{ 1 }{ 9\color{blue}{x} }-2\]
inverse would be \[\huge\rm\color{blue}{x}=\frac{ 1}{ 9\color{ReD}{y}}-2\]
now solve for y

Answer 7

do you know how to solve that equation for y?

Answer 8

y = 1/9(x+ 2) ?