SOLUTION: solve the following equation using substitution -3x+y=-2 -x+y=6

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Question 679142: solve the following equation using substitution -3x+y=-2 -x+y=6
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
-3x%2By=-2.......1
-x%2By=6..........2
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-3x%2By=-2.......1 ...solve for y
y=3x-2........substitute in 2

-x%2B%283x-2%29=6..........2...solve for x
-x%2B3x-2=6
2x=6%2B2
2x=8
highlight%28x=4%29
now find y

y=3x-2...plug in x=4
y=3%2A4-2
y=12-2
highlight%28y=10%29

let's see it on a graph: