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Given the function?

0 votes

Given the function f(x)=9x+7, find its inverse.

A. f^-1(x)=(x-9)/7

B. f^-1(x)=x/9-7

C. f^-1(x)=(x-7)/9

D. f^-1(x)=x/7-9

inverse-function

asked Jul 16, 2014 in ALGEBRA 1 by anonymous

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1 Answer

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The function

Change f(x) to y.

Interchange x and y .

Now solve for y.

Replace y by .

Option C is correct answer.

answered Jul 16, 2014 by david Expert

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