document.write( "Question 465425: how to solve a system by graphing?
\n" ); document.write( "problem:
\n" ); document.write( "x - 3y = -9
\n" ); document.write( "x - 3y = 6
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Algebra.Com's Answer #318935 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
They're straight lines, so you need 2 points for each equation.
\n" ); document.write( "Pick values for x and find y.
\n" ); document.write( "Plot the 2 points.
\n" ); document.write( "Draw a line thru them.
\n" ); document.write( "The solution of the system is where the lines intersect.
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\n" ); document.write( "If the lines are parallel, there's no intersection --> no solution.
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\n" ); document.write( "dl the FREE graph software at
\n" ); document.write( "http://www.padowan.dk
\n" ); document.write( "Use F6 to enter the equations as they are.
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