SOLUTION: solve the system of equation by graphing x+y=11 x-y=7

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Question 103396: solve the system of equation by graphing
x+y=11
x-y=7
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
+graph%28+300%2C+300%2C+-2%2C+12%2C+-5%2C+10%2C+11-x%2C+x-7%29
Looks like the lines intersect at x=9.
When x = 9, then using the first equation:
x%2By=11
9%2By=11
y=2
When x = 9, then using the second equation:
x-y=7
9-y=7
y=2
So the intersection point (solution) is (9,2).