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document.write( "Add 4x-7 to both sides of the first inequality\r\n" );
document.write( "Add 4x-8 to both sides of the second inequality:\r\n" );
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document.write( "Divide both sides of both inequalities by 4\r\n" );
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document.write( "Graph the first inequality. We use an open circle, o, for 
\r\n" );
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document.write( " ----------------------------o=======================>\r\n" );
document.write( "-3 -2 -1.25 -1 -0.25 0 1 2\r\n" );
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document.write( "Graph the second inequality. We use a closed circle, @, for 
\r\n" );
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document.write( "<===================@---------------------------------\r\n" );
document.write( " -3 -2 -1.25 -1 -0.25 0 1 2\r\n" );
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document.write( "Since the word between the inequalities is \"OR\", we take their \r\n" );
document.write( "UNION:\r\n" );
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document.write( "<===================@---------o=======================>\r\n" );
document.write( " -3 -2 -1.25 -1 -0.25 0 1 2\r\n" );
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document.write( "The abbreviation for this graph is called \"interval notation\":\r\n" );
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document.write( " (
,-1.25] U (-0.25, 
)\r\n" );
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document.write( "Note that the bracket ] stands for a closed circle @ and a (\\r\n" );
document.write( "stands for an open circle o.\r\n" );
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document.write( "Edwin
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document.write( "![\"\"](\"/images/stars/stars-13.gif\")
