anonymous
  • anonymous
What is the solution for this system of linear equations? I'm stuck, y=-2x+1 y+7x-17 so -2x+1=7x-17 ??
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
if the second one is \(y=7x-17\) then yes
anonymous
  • anonymous
\[-2x+1=7x-17\]
anonymous
  • anonymous
add \(2x\) to both sides add \(17\) to both sides divide both sides by \(9\) will get you \(x\)

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anonymous
  • anonymous
if you want me to check your answer, let me know
anonymous
  • anonymous
so I get 1=9x-17 then 9 divided 18 = 2? so x=2?
anonymous
  • anonymous
you got it
anonymous
  • anonymous
how would I find y with this one?
anonymous
  • anonymous
then of course you have to find \(y\) but since you know \(x=2\) that should be easy
anonymous
  • anonymous
replace \(x\) by \(2\) in either equation if you want to check to make sure your answer is right, put \(2\) for \(x\) in both and see if you get the same number
anonymous
  • anonymous
is y=15? or y=3? I got a different answer when I pluged 2 into both problems /:
anonymous
  • anonymous
should be the same lets check
anonymous
  • anonymous
\[y=-2x+1\] \[y=-2\times 2+1=-4+1=-3\]
anonymous
  • anonymous
\[y=7x-17\] \[y=7\times 2-17=14-17=-3\]
anonymous
  • anonymous
so you should get \(y=-3\) for both, i am not exactly sure how you got the 15
anonymous
  • anonymous
okay now I see what I did wrong there, hmmm! thank you for showing both, I wouldn't have seen it if you hadn't!
anonymous
  • anonymous
yw

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