SOLUTION: how to solve a system by graphing? problem: x - 3y = -9 x

SOLUTION: how to solve a system by graphing? problem: x - 3y = -9 x - 3y = 6

Question 465425: how to solve a system by graphing?
problem:
x - 3y = -9
x - 3y = 6
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
how to solve a system by graphing?
problem:
x - 3y = -9
x - 3y = 6
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The lines are parallel; there is no solution for the system.

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Cheers,
Stan H.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
They're straight lines, so you need 2 points for each equation.
Pick values for x and find y.
Plot the 2 points.
Draw a line thru them.
The solution of the system is where the lines intersect.
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If the lines are parallel, there's no intersection --> no solution.
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dl the FREE graph software at
http://www.padowan.dk
Use F6 to enter the equations as they are.
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