SOLUTION: How do you solve this? 3x-y=-20 -6x+2y=40 I think the answer is 0=0 true statment. Is that correct?

Question 224273: How do you solve this?
3x-y=-20
-6x+2y=40
I think the answer is 0=0 true statment. Is that correct?

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
0 does equal 0.
The 2nd equation is -2 times the 1st. The equations are dependent.
--> no unique solution.
If you graph it, you get the same line twice. All points on the line fit the 2 equations.