document.write( "Question 1005790: find the general form if the center is (-1,-4) and a point on the circle is (-1,1). show solution. \n" ); document.write( "
Algebra.Com's Answer #621945 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "if the center is (\"h\",\"k\")=(\"-1\",\"-4\") and a point on the circle is (\"x\",\"y\")=(\"-1\",\"1\") we will use it to find the radius \"r\"\r
\n" ); document.write( "\n" ); document.write( "\"%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"%28-1-%28-1%29%29%5E2%2B%281-%28-4%29%29%5E2=r%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"%28-1%2B1%29%5E2%2B%281%2B4%29%5E2=r%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"%280%29%5E2%2B%285%29%5E2=r%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"25=r%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"r=5\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28x%2B1%29%5E2%2B%28y%2B4%29%5E2=5%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"%28x%5E2%2B2x%2B1%29%2B%28y%5E2%2B8y%2B16%29=25\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B2x%2B1%2By%5E2%2B8y%2B16-25=0\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%2By%5E2%2B2x%2B8y%2B17-25=0\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%2By%5E2%2B2x%2B8y-8=0\"\r
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