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Mathematics 9 Online
OpenStudy (anonymous):

Confirm that f and g are inverse by showing that f(g(x))=x and g(f(x))=x F(x)=9x+3 and g(x)=x-3/9

OpenStudy (retireed):

I can't prove it, at least for the first part. |dw:1449544904910:dw|

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