document.write( "Question 932193: Find an equation of the line containing the centers of the two circles
\n" ); document.write( "x^2+y^2-10x-10y+49 and x^2+y^2-4x-6y+9=0
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Algebra.Com's Answer #566053 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
First find the centers.
\n" ); document.write( "\"x%5E2-10x%2By%5E2-10y%2B49=0\"
\n" ); document.write( "\"%28x%5E2-10x%2B25%29%2B%28y%5E2-10y%2B25%29%2B49=25%2B25\"
\n" ); document.write( "\"%28x-5%29%5E2%2B%28y-5%29%5E2=1\"
\n" ); document.write( "(\"5\",\"5\") with a radius of \"1\".
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\n" ); document.write( "\n" ); document.write( "\"x%5E2-4x%2By%5E2-6y%2B9=0\"
\n" ); document.write( "\"%28x%5E2-4x%2B4%29%2B%28y%5E2-6y%2B9%29%2B9=4%2B9\"
\n" ); document.write( "\"%28x-2%29%5E2%2B%28y-3%29%5E2=4\"
\n" ); document.write( "(\"2\",\"3\") with a radius of \"2\".
\n" ); document.write( "Find the slope,
\n" ); document.write( "\"m=%285-3%29%2F%285-2%29=2%2F3\"
\n" ); document.write( "Use the point-slope form,
\n" ); document.write( "\"y-5=%282%2F3%29%28x-5%29\"
\n" ); document.write( "\"y-5=%282%2F3%29x-10%2F3\"
\n" ); document.write( "\"y=%282%2F3%29x-10%2F3%2B15%2F3\"
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