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y=5a-1 a=-3x+4 write y as a function of x
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by anne_35989 at September 20, 2011

composition of functions

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Since a=3x+4, then substituting for "a" you get y = 5 (3x+4) - 1 and then y = 15x + 20 - 1 y = 15x + 19 Hope this helps

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Carlo September 20, 2011

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Yes, thanks I did it backwards

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anne_35989 September 20, 2011