document.write( "Question 1023758: Given triangle ABC with coordinates A(3, 4), B(4, -3), and C(-4, -1) determine the equation of the line of the median from vertex A. \n" ); document.write( "
Algebra.Com's Answer #639286 by Edwin McCravy(20056)\"\" \"About 
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document.write( "The median (the green line) connects the vertex\r\n" );
document.write( "A(3,4) to the midpoint of the opposite side CB. \r\n" );
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document.write( "We find the midpoint of CB using the midpoint\r\n" );
document.write( "formula:\r\n" );
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document.write( "Midpoint = \r\n" );
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document.write( "Midpoint = \r\n" );
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document.write( "Midpoint = \"M%28matrix%281%2C3%2C0%2F2%2C+%22%2C%22%2C%28-4%29%2F2%29%29\"\r\n" );
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document.write( "Midpoint = M(0,-2)\r\n" );
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document.write( "We find the equation of median AM.\r\n" );
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document.write( "We use the slope formula:\r\n" );
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document.write( "m = \"%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"\r\n" );
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document.write( "where (x1,y1) = A(3,4)\r\n" );
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document.write( "and where (x2,y2) = M(0,-2)\r\n" );
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document.write( "m = \"%28%28-2%29-%284%29%29%2F%28%280%29-%283%29%29\"\r\n" );
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document.write( "m = \"%28-6%29%2F%28-3%29\"\r\n" );
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document.write( "m = 2\r\n" );
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document.write( "Point-slope formula:\r\n" );
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document.write( "y - y1 = m(x - x1)\r\n" );
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document.write( "where m=2 and (x1,y1) = (3,4)\r\n" );
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document.write( "y - 4 = 2(x - 3)\r\n" );
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document.write( "y - 4 = 2x - 6\r\n" );
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document.write( "    y = 2x - 2\r\n" );
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document.write( "Edwin
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