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Mathematics 18 Online
OpenStudy (janettevegaa):

Which of these is the solution to this system of linear equations ? y=8x and y=2x

OpenStudy (bibby):

set them equal to each other and solve

OpenStudy (janettevegaa):

set the two equations equal to eachother ?

OpenStudy (janettevegaa):

@bibby

OpenStudy (bibby):

8x=2x

OpenStudy (janettevegaa):

and then ?

OpenStudy (bibby):

solve for x

OpenStudy (janettevegaa):

do i divide

OpenStudy (bibby):

I'm not sure how to explain this, the only valid x value here is 0

OpenStudy (bibby):

so the solution is (0,0)

OpenStudy (janettevegaa):

do you think you can try to explain ??

OpenStudy (janettevegaa):

okay so howd you get 0,0

OpenStudy (bibby):

wait I'm an idiot

OpenStudy (bibby):

8x=2x subtract 2x from both sides 6x=0 x=0 then plug back in x=0 into either equation

OpenStudy (janettevegaa):

wow that it super confusing but thank you for your help (:

OpenStudy (bibby):

anytime

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