document.write( "Question 1010202: Write the standard form of the equation of the line described.
\n" ); document.write( "Through; (-4,-5) perp to y=-4/7x-2
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Algebra.Com's Answer #625656 by Edwin McCravy(20054)\"\" \"About 
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Write the standard form of the equation of the line described.
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document.write( "Take the \"-4%2F7\"\r\n" );
document.write( "Change its sign. Get \"4%2F7\"\r\n" );
document.write( "Invert it. Get \"7%2F4\"\r\n" );
document.write( "Write \"y=expr%287%2F4%29x%2Bb\"\r\n" );
document.write( "Substitute x=-4 and y=-5\r\n" );
document.write( "\"-5=expr%287%2F4%29%28-4%29%2Bb\"\r\n" );
document.write( "-5=-7+b\r\n" );
document.write( "2=b\r\n" );
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document.write( "Substitute 12 for b in \"y=expr%287%2F4%29x%2Bb\", get \"y=expr%287%2F4%29x%2B2\".\r\n" );
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document.write( "If we draw the graphs of each, we get what is below.  The red line is \r\n" );
document.write( "the graph of the given equation, and the green one is the line through \r\n" );
document.write( "(-4,-5) which is perpendicular to it.\r\n" );
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document.write( "Edwin
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