Question 57754: 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 by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 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
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Your work looks good so far. You don't have a point
yet; you need to solve for X.
Substitute your y value into one of the original
equations as follows:
2X-Y=-2
2X-4.57=-2
2x=2.57
x=1.285
Your solution is (1.285,4.57)
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Cheers,
Stan H.
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