Question

2X-Y=-2 and X+3Y=-15
2X-Y=-2
1X+3Y=-15
1(2X-1Y=-2)
2(-1X+-3Y=-15)
2X-1Y= -2
-2X+-6Y=-30
-7Y -32
----- -----
-7 -7
Y= 4.57
Is this correct? This seems odd because now I have to graph these points. Please help!!!!

Answer 1

Answer:

X=-3, Y=-4

Steps:

2X-Y=-2...(1)

X+3Y=-15...(2)

By No.(1) ×1 - No.(2) ×2

2X-Y=-2

-2X-6Y=-30

___________

-7Y=28

Or,Y=-4

So,X=-3