SOLUTION: x+y=6 x-y=2 I'm trying to figure out how to solve this for graphing. I know the graphing part, Just not sure on how to solve the problem. Thanks!

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Question 74643This question is from textbook
: x+y=6
x-y=2
I'm trying to figure out how to solve this for graphing. I know the graphing part, Just not sure on how to solve the problem. Thanks! This question is from textbook

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
x+y=6
x-y=2
I'm trying to figure out how to solve this for graphing.
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Graphing is an "inexact" method of solving systems of equations
because the accuracy of the solution depends completly on the
accuracy of the graph--and most of us are not very accurate is
drawing graphs.
So you do the best you can.
You graph the two lines and try to determine their point of
intersection.
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If you add your two equations you get 2x=8; x=4.
Substituting will also give you y = 2
That information is helpful when you come to determining the
point of intersection.
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Cheers,
Stan H.