SOLUTION: how do you solve the linear system 6x+6y=-2 y=-x

Question 103771This question is from textbook algebra2
: how do you solve the linear system 6x+6y=-2 y=-x This question is from textbook algebra2

Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
Y=-X NOW SUBSTITUTE -X FOR Y IN THE OTHER EQUATION
6X+6*-X=-2
6X-6X=-2
0=-2 NO UNIWUE SOLUTION.
PROOF:
Y=-X (RED LINE)
6X+6Y=-2
6Y=-6X-2
Y=-6X/6-2/6
Y=-X-1/3 (green line)
(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x and y = -x +1/3 ).
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