Answer:
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
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