SOLUTION: solve the system of equations by graphing x-y=4 x+y=8

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Question 272012: solve the system of equations by graphing
x-y=4
x+y=8
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Solve by graphing:
x-y = 4
x+y = 8
Rewrite these as:
y = x-4
y = -x+8
Now graph them:
graph%28400%2C400%2C-5%2C10%2C-5%2C5%2Cx-4%2C-x%2B8%29
Notice that the lines intersect at (6,2) so this is the solution to this system of equations.