SOLUTION: 4x-2y=8 2x-y=7

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Question 363563: 4x-2y=8
2x-y=7
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4x-2y=8
2x-y=7 MULTIPLY BY -2 & ADD.
-4X+2Y=-14
4X+2Y=8
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0X+0Y=-6 NO UNIQUE SOLUTION FOR X OR Y BECAUSE THESE ARE 2 PARALLEL LINES.
-2Y=-4X+8
Y=-4X/-2+8/-2
Y=2X-4 (RED LINE)
-Y=-2X+7
Y=2X-7 (GREEN LINE)
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+2x+-4%2C+2x+-7%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 2x -4 and 2x -7).