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Question 116460: I accidentally asked the same question twice could someone please help with this graphing question?
Solve the following system of equations by graphing: y=x-4
2y=-x+10
Found 2 solutions by checkley71, stanbon:
Answer by checkley71(8403)   (Show Source):
You can put this solution on YOUR website! HOPE THESE EXPLANATIONS OF FINDING 2 POINTS & THEN DRAWING A LINE HELPS!!!!
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Y=X-4 (RED LINE)
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IF YOU SET X=0 THEN Y=0-4 OR Y=-4 (0,-4)
SET Y=0 THEN 0=X-4 OR X=4 (4,0)
NOW YOU HAVE 2 POINTS TO DRAW A LINE THROUGH WITH A SLOPE (m)=1
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2Y=-X+10 OR Y=-X/2+10/2 OR Y=-X/2+5 (GREEN LINE)
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AGAIN SET X=0 Y=-0/2+5 OR Y=5 (0,5)
SETY=0 0=-X/2+5 -X/2=-5 OR X=-5*-2 OR X=10 (10,0)
NOW DRAW A LINE THROUGH THESE 2 POINTS WITH A SLOPE(m)=-1/2
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 (graph 300x300 pixels, x from -6 to 12, y from -10 to 10, of TWO functions y = x -4 and y = -x/2 +5).
(6,2) looks like a solution for these two lines.
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Solve the following system of equations by graphing:
y=x-4
2y=-x+10
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y = x-4
Plot two points and draw a line thru them:
Let x=0, then y = -4 giving you point (0,-4)
Let x=1, then y = -3 giving you point (1,-3)
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y = (-1/2)x+5
Plot two points and draw a line on the same
set of axes:
Let x = 0, then y = 5 giving you point (0,5)
Let x = 2, then y = 4 giving you point (2,4)
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It looks like the line intersect at (6,2)
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Cheers,
Stan H.
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