SOLUTION: How would I find the solution to the system, x+y= -4 3x-y=-4 by graphing?

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Question 168373: How would I find the solution to the system, x+y= -4 3x-y=-4 by graphing?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=-4
y=-x-4 (red line)
3x-y=-4
-y=-3x-4
y=3x+4 (green line)
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+-x+-4%2C+3x+%2B4%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions -x -4 and 3x +4).
Solution (-2,-2)