Question 243532: Solve the system of equations by graphing. Then classify the system.
x+y=7
x-y=-1
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Solve the system of equations by graphing. Then classify the system.
x+y=7
x-y=-1
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Solve each equation for "y":
y = -x+7
y = x+1
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Plot two two points for each equation and draw a line thru them:
For y = -x+7
Let x = 0, then y = 7 giving you (0,7)
Let x = 2, then y = 5 giving you (2,5)
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For y = x+1
Let x = 0, then y = 1 giving you (0,1)
Let x = 2, then y = 3 giving you (2,3)
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Plot each pair of points and draw the lines to get the graphs.
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The two lines meet at (3,4) so that is the solution
for the system of equations.
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Solution: (3,4)
Class: consistent
Cheers,
Stan H.
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