HayleyWhite17
If f(x) = 5x + 3, then what is f–1(x) ?



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timo86m
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inverse

timo86m
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f(x)=y=5x+3
sfr x and then swap x and y

Outkast3r09
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interchange x and y and solve for y

timo86m
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y=5x+3
y5x=3
5x=3y
x=3/5  y/3
so
y=3/5  x/3

HayleyWhite17
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I got x+3/5 as my answer?

timo86m
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\[y=3/5+1/5\,x\]

HayleyWhite17
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I'll draw the options

HayleyWhite17
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dw:1342734136873:dw

timo86m
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it be 4 :)dw:1342734266679:dw

cookies
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hy i know u out hmmmmm we should talk more