Question 577267: How do I graph and determine the solution set of:
x=7-2y
y=3x
What i tried to do was set them to zero, but I didn't know what else to do..please help!
Found 2 solutions by stanbon, josmiceli:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! How do I graph and determine the solution set of:
x=7-2y
Solve for "y":
2y = -x+7
y = (-1/2)x+(7/2)
Plot 2 points:
If x = 2, y = -1+(7/2) = 2 1/2
If x = 0, y = (7/2) = 3 1/2
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Plot (2,2 1/2) and (0, 3 1/2) and draw a line thru them.
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y=3x
If x = 0, y = 0
If x = 1, y = 3
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Plot (0,0) and (1,3) and draw a line thru them.
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Find the point of intersection of the 2 lines.
That is the solution of the set of 2 solutions.
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Cheers,
Stan H.
Answer by josmiceli(19441)  (Show Source):
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