document.write( "Question 583422: Solve the system of equation by graphing
\n" ); document.write( "x+y=4
\n" ); document.write( "y-x=4
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Algebra.Com's Answer #372436 by dfrazzetto(283)\"\" \"About 
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slope intercept form:\r
\n" ); document.write( "\n" ); document.write( "y = 4 - x\r
\n" ); document.write( "\n" ); document.write( "y = x + 4\r
\n" ); document.write( "\n" ); document.write( "\"+graph%28+800%2C+700%2C+-7%2C+7%2C+-1%2C+7%2C+4-x%2C+x%2B4%29+\"\r
\n" ); document.write( "\n" ); document.write( "The solution (where the lines / equations intersect is clearly:\r
\n" ); document.write( "\n" ); document.write( "(0,4)
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