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Mathematics 18 Online
OpenStudy (jazzyfa30):

Does anybody know how to do the inverse of a function? work attached

OpenStudy (jazzyfa30):

Match the function (f) with its inverse (f-1). f(x)= 3x + 1

OpenStudy (jazzyfa30):

answer choices are 3x-12 3x+12 f(x)-1=x-3/3 x-1/3 this funtion does not have an inverse

OpenStudy (anonymous):

suppose you wanted to solve \(3x+1=7\) for \(x\) what would you do?

OpenStudy (jazzyfa30):

subtract 1 from both sides

OpenStudy (anonymous):

right then ...

OpenStudy (jazzyfa30):

divide by 3

OpenStudy (anonymous):

exactly

OpenStudy (anonymous):

that is what the inverse function does: subtract 1, divide by 3 you can write it as \(f^{-1}(x)=\frac{x-1}{3}\)

OpenStudy (jazzyfa30):

so the answer for #1 is D

OpenStudy (jazzyfa30):

has the same answer choses f(x)=3x + 3

OpenStudy (jazzyfa30):

@Greeeen

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