document.write( "Question 650141: Solve the following system of inequalities by graphing. draw a graph
\n" ); document.write( "5x - 4y ≥ -20
\n" ); document.write( "3x - 2y ≤ -8
\n" ); document.write( "y ≥ -3\r
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\n" ); document.write( "\n" ); document.write( "-9x + 6y ≥ 18
\n" ); document.write( "-x + 3y ≥ -12
\n" ); document.write( "y ≤ 4
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\n" ); document.write( "\n" ); document.write( "3x + 12y ≥ -108
\n" ); document.write( "-7x + 6y ≤ 48
\n" ); document.write( "y ≤ -4
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\n" ); document.write( "\n" ); document.write( "6x + 10y ≤ -40
\n" ); document.write( "x + y ≤ -8
\n" ); document.write( "y ≥ -1\r
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\n" ); document.write( "\n" ); document.write( "-4x + 16y ≥ 128
\n" ); document.write( "-3x + 8y ≤ 80
\n" ); document.write( "y ≤ 12
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "3x + 9y < -18
\n" ); document.write( "-x + 3y ≤ 12
\n" ); document.write( "y < 0\r
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\n" ); document.write( "\n" ); document.write( "5x + 2y ≥ -6
\n" ); document.write( "-5x + 2y < 14
\n" ); document.write( "y < 6\r
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\n" ); document.write( "\n" ); document.write( "-6x - 2y < -16
\n" ); document.write( "2x - y > 2
\n" ); document.write( "y ≥ -4\r
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Algebra.Com's Answer #407203 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
First you have to solve the first one for y and put it into \"y+=+mx+%2B+b\" form, but remember to switch the sign if you divide by -1 \r
\n" ); document.write( "\n" ); document.write( "\"5x+-+4y+%3E=+-20\"
\n" ); document.write( "\"3x+-+2y+%3C=+-8\"
\n" ); document.write( "\"y+%3E=+-3\"\r
\n" ); document.write( "\n" ); document.write( "\"5x+-+4y+%3E=+-20\"..->...\"5x+%2B20%3E=+4y\"->...\"%285%2F4%29x+%2B5%3E=+y\"...or ..\"y%3C=%285%2F4%29x+%2B5\"\r
\n" ); document.write( "\n" ); document.write( "\"3x+-+2y+%3C=+-8\"..->...\"3x+%2B8%3E=+2y\"->...\"%283%2F2%29x+%2B4%3E=+y\"...or...\"y%3C=%283%2F2%29x+%2B4\"\r
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\n" ); document.write( "\n" ); document.write( "\"y+%3E=+-3\"\r
\n" ); document.write( "\n" ); document.write( "\"Solving\" systems of linear inequalities means \"graphing each individual inequality, and then finding the overlaps of the various solutions\".
\n" ); document.write( "So you need to graph each inequality, and then \"find\" the \"overlapping\" portions of the solution regions.\r
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\n" ); document.write( "\n" ); document.write( "first see them just like lines\r
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\n" ); document.write( "\n" ); document.write( "now see overlapping area (on this picture painted white)\r
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\n" ); document.write( "\n" ); document.write( "2.\r
\n" ); document.write( "\n" ); document.write( "\"-9x+%2B+6y+%3E=+18\"
\n" ); document.write( "\"-x+%2B+3y+%3E=+-12\"
\n" ); document.write( "\"y+%3C=+4\"\r
\n" ); document.write( "\n" ); document.write( "\"-9x+%2B+6y+%3E=+18\"..->...\"6y%3E=9x%2B18\"->...\"y%3E=%289%2F6%29x%2B3\"\r
\n" ); document.write( "\n" ); document.write( "\"-x+%2B+3y+%3E=+-12\"}..->...\"3y%3E=x%2B12\"..->...\"y%3E=%281%2F3%29x%2B4\"\r
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\n" ); document.write( "\n" ); document.write( "\"y+%3C=+4\"\r
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\n" ); document.write( "\n" ); document.write( "now see overlapping area (on this picture painted white)\r
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\n" ); document.write( "\n" ); document.write( "I hope, you will be able to solve other systems by yourself following these examples.\r
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