Question

If f(x)=1/9x-13, then f^-1(x)=

Answer 1

f^-1(x)= 9x+117

Explanation:

hello :

let f(x) = y so : y = 1/9 x-13

calculate : x you have : 1/9x= y+13 so : x= 9(y+13)=9y+117

If f(x)=1/9x-13, then f^-1(x)= 9x+117