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You have linear functions f(x) and g(x). You know f(2)=3, and f(g(x))=4x+7 for all x. Find g(-1).

 Aug 1, 2020
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f(2) = 3

 

f(g(-1)) = 4(-1) + 7 = 3 = f(2)

 

Because f(g(-1)) = f(2), g(-1) = 2.

 Aug 1, 2020

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