document.write( "Question 284038: how to sketch graph of liner system
\n" ); document.write( "x + 2y = 3
\n" ); document.write( "-7x + 3y = -21 \n" ); document.write( "
Algebra.Com's Answer #206132 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
It's linear, meaning they're straight lines. 2 points for each are needed.
\n" ); document.write( "x + 2y = 3
\n" ); document.write( "x = 3 - 2y
\n" ); document.write( "Pick 2 values for y and find x.
\n" ); document.write( "y....x
\n" ); document.write( "0....3 --> (0,3)
\n" ); document.write( "3....-3 --> (-3,3)
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\n" ); document.write( "Plot the 2 points, draw a line thru them.
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\n" ); document.write( "-7x + 3y = -21
\n" ); document.write( "y = (7/3)x - 7
\n" ); document.write( "Pick 2 values for x and find y.
\n" ); document.write( "Plot the points, draw a line thru them
\n" ); document.write( "----------------
\n" ); document.write( "Where the lines intersect is the solution.\r
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