Mathematics
If f and y are inverse functions and f(2)=9, what is y(10)?

### Question Description

I’m trying to learn for my Algebra class and I’m stuck. Can you help?

If f and y are inverse functions and f(2)=9, what is y(10)?

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f(x) is the inverse of y(x)

y(f(x))=1 and f(y(x))=1

f(2)=9, then y(9)=2

y(10)=y(9+1)=y(9)+y(1) = 2 + y(1)

I think you left some info out of the problem. Please check again.

Prashant S (1995)
UIUC
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