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eviant:
PLS HELP!!! If f(x) = 5x – 6, what is the equation for f–1(x)?
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eviant:
@Vocaloid
dude:
Uh basically find the inverse of the equation, do you know how to do that?
eviant:
no
dude:
\(f(x) = 5x – 6\) Change f(x) with y to make it easier to look at \(y=5x-6\) Now flip x and y and solve for y \(x=5y-6\)
eviant:
I think you add 6 or 5 next to both sides?
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dude:
Add 6, the 5 is being multiplied by y
eviant:
x=11
eviant:
x=55
dude:
Wait what, you're not supposed to get an answer like that Add 6 on both sides \(x+6=5y\) Then divide by 5 on both sides \(\large \frac{x+6}{5}=y\) That is your equation
eviant:
oh
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eviant:
thanks
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