SOLUTION: x + Y = -3 2x - y = -3 Pls solve and show detail. Need to know if graph has one solution, no solution, or infinitely many solutions.

Algebra ->  Linear-equations -> SOLUTION: x + Y = -3 2x - y = -3 Pls solve and show detail. Need to know if graph has one solution, no solution, or infinitely many solutions.      Log On


   

Question 74453: x + Y = -3
2x - y = -3
Pls solve and show detail. Need to know if graph has one solution, no solution, or infinitely many solutions.
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
X+Y=-3
Y=-X-3
-----------------
2X-Y=-3
-Y=-2X-3
Y=2X+3
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+y+=+-x+-3%2C+y+=+2x+%2B3%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x -3 and y = 2x +3).