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Algebra 17 Online
OpenStudy (anonymous):

find the inverse of F(x)=(2x-3)/5

OpenStudy (rea201):

f(x)=(2x-3)/5 so y=(2x-3)/5 You need to have the variables switch spots. so it will look like this x=(2y-3)/5 and solve for y

OpenStudy (rea201):

what do you get for your answer

OpenStudy (nincompoop):

OR you can directly solve for x and then switch the x and y at the end

OpenStudy (rea201):

It should be y=(5x+3)/2

OpenStudy (nincompoop):

please do not give out actual answers. it's considered cheating and defeats the purpose of "studying"

OpenStudy (anonymous):

(5y+3)/2 ?

OpenStudy (rea201):

Yes

OpenStudy (anonymous):

alright thanks

OpenStudy (rea201):

Yup

OpenStudy (anonymous):

would F(x)=4x+7 y-7/4 ?

OpenStudy (rea201):

yes if you mean x=(y-7)/4. but remember you have to change the y to x

OpenStudy (anonymous):

do i always have to put the parenthesis?

OpenStudy (rea201):

yes unless you are writing it on paper like in this drawing|dw:1393528167837:dw|

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