document.write( "Question 1113225: trace the conic:
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Algebra.Com's Answer #728238 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2-3xy%2By%5E2%2B10x-10y%2B21=0\"$
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document.write( "We solve for y:\r\n" );
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document.write( "a=1, b=(-3x-10), c=(x²+10x+21)\r\n" );
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document.write( "Make a table of values using that formula\r\n" );
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document.write( " x |      y\r\n" );
document.write( "-10|-1.1 and -18.9\r\n" );
document.write( " -7|  0  and -11 \r\n" );
document.write( " -4|  1  and  -3\r\n" );
document.write( " -3|  1  and   0\r\n" );
document.write( " -2|imaginary\r\n" );
document.write( " -1|  4  and   3\r\n" );
document.write( "  0|  7  and   3\r\n" );
document.write( "  3| 15  and   4\r\n" );
document.write( " 11| 36  and   7\r\n" );
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document.write( "Plotting some of those and others gives the rotated\r\n" );
document.write( "and shifted hyperbola:\r\n" );
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document.write( "Edwin

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