document.write( "Question 1187217: Write the equation of the hyperbola. Co - Ve Vertices: (1, 5) , (1, 1) Focus : (4, 3) \n" ); document.write( "
Algebra.Com's Answer #819221 by MathLover1(20850)\"\" \"About 
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the equation of the hyperbola:\r
\n" ); document.write( "\n" ); document.write( "\"%28x-h%29%5E2%2Fa%5E2-%28y-k%29%5E2%2Fb%5E2=1\"\r
\n" ); document.write( "\n" ); document.write( "the length of the transverse axis is \"+2a\"
\n" ); document.write( "the coordinates of the vertices are (\"h\" ± \"a\", \"k\")
\n" ); document.write( "the length of the conjugate axis is \"2b\"
\n" ); document.write( "the coordinates of the co-vertices are (\"h\" , \"k\" ±\"+b\" )
\n" ); document.write( "the distance between the foci is \"2c\", where \"c%5E2=a%5E2%2Bb%5E2\"
\n" ); document.write( "the coordinates of the foci are (\"h\" ±\"c\", \"k\")\r
\n" ); document.write( "\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "Co -Vertices: (\"1\", \"5\") , (\"1\", \"1\") \r
\n" ); document.write( "\n" ); document.write( "we know that the center is half way between: (\"%281%2B1%29%2F2\",\"%285%2B1%29%2F2\")=(\"1\",\"3\") => so, \"+h=1\" and \"+k=3\"\r
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\n" ); document.write( "\n" ); document.write( "use Co -Vertices: (\"1\", \"5\"), \"+h=1\" and \"+k=3\" to find \"b\"\r
\n" ); document.write( "\n" ); document.write( "(\"1\" , \"3\"±\"b\" )=(\"1\", \"5\") \r
\n" ); document.write( "\n" ); document.write( "(\"1\" , \"3\"±\"b\" )=(\"1\", \"5\")=>\"3\"±\"b=5\" =>±\"b=2\"\r
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\n" ); document.write( "\n" ); document.write( "the coordinates of the foci are (\"h+\"±\"c\", \"k\")= (\"4\",\"+3\") =>(\"1\" ±\"c\",\"+3\")= (\"4\", \"3\") =>\"1\" ±\"c=4\"=>±\"c=4-1\"=>±\"c=3\"\r
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\n" ); document.write( "\n" ); document.write( "then \"c%5E2=a%5E2%2Bb%5E2\"=>\"3%5E2=a%5E2%2B2%5E2\"=>\"a%5E2=9-4=5\"\r
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\n" ); document.write( "\n" ); document.write( "and your equation is:\r
\n" ); document.write( "\n" ); document.write( "\"%28x-1%29%5E2%2F5-%28y-3%29%5E2%2F4=1\"\r
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