document.write( "Question 668601: How do you graph the solution set of the following system of linear inequalities in a rectangular coordinate system:
\n" ); document.write( "2x+2y>6
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Algebra.Com's Answer #415778 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "We graph the three boundary lines, and we draw them all as\r\n" );
document.write( "dotted lines because the inequalities are < and > and not\r\n" );
document.write( "≦ and ≧.\r\n" );
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document.write( "We use the origin (0,0) as a test point,\r\n" );
document.write( "Substituting x=0, y=0 in each gives:\r\n" );
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document.write( "The red inequality is false, so the region to shade is above and\r\n" );
document.write( "to the right of the red dotted line, because (0,0) is NOT on that \r\n" );
document.write( "side of the red line.\r\n" );
document.write( "The blue inequality is true, so the region to shade is to the left\r\n" );
document.write( "of the blue line, because (0,0) IS on that side of the blue line. \r\n" );
document.write( "The green inequality is true, so the region to shade is above\r\n" );
document.write( "the green line, because (0,0) IS on that side of the green line. \r\n" );
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document.write( "Therefore the region to shade is\r\n" );
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document.write( "Edwin

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