Determine f(f-1(x)) and f-1(f(x)) of the following functions. What do you notice?(adsbygoogle = window.adsbygoogle || []).push({});

a.) f(x) = 7x-3

b.)f(x) = 2/3 x+2 (there were no brackets the x+2 is just beside the fraction)

Rule: If f(g(x)) = x and f(f(x)) = x, then f(x) and g(x) are inverse of each other.

This is my exercise question I dont understand what to do I get the rule but how am getting an answer of x? I have the solutions also, but I dont know what to do with the numbers am I solving for something? :uhh:

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# Homework Help: Inverse functions

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