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how do you do this question i neec help havd a test

Mathematics
Tutor: None Selected Time limit: 1 Day

Oct 13th, 2014

Let y = 5 x + 6  ( using y for f(x))

then 5x + 6 = y 

5x = y - 6 

x =   1/5 (y - 6)                       We can now find x from y or f (x)

So the inverse function is g (x) = 1/5 (x -6)

check f (2) = 10 +6 = 16

and g(16) =1/5 (16 -6) = 2   

Oct 13th, 2014

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Oct 13th, 2014
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Oct 13th, 2014
Dec 6th, 2016
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