Algebra.Com's Answer #658349 by ikleyn(52794)![\"\"](\"/images/stars/stars-13.gif\")  
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document.write( "Find the center,foci,vertices and covertices of the ellipse with the given equation.\r
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document.write( "9x^2+16y^2-126x+64y=71
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document.write( " =  --->\r\n" );
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document.write( " = --->\r\n" );
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document.write( " =  ,\r\n" );
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document.write( " =  ,\r\n" );
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document.write( " = ,\r\n" );
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document.write( " =  , ( <--- next divide both sides by 676 =  )\r\n" );
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document.write( " = 1, or\r\n" );
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document.write( " = 1.\r\n" );
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document.write( "The center of the ellipse is the point (7,-2).\r\n" );
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document.write( "The semi-major axis is a =  .\r\n" );
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document.write( "The semi-minor axis is b =  = 13/2. (Notice that a > b. The major axis is horizontal, and the ellipse is wider than tall).\r\n" );
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document.write( "Two vertices in horizontal directions are ( , ) and ( ,).\r\n" );
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document.write( "Two vertices in vertical directions are ( , ) and (, ).\r\n" );
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document.write( "The linear eccentricity is c =  =  =  =  =  =  .\r\n" );
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document.write( "The foci are ( ,) and ( ,).\r\n" );
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document.write( "See the lesson \r
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document.write( " - Ellipse definition, canonical equation, characteristic points and elements\r
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document.write( "in this site.\r
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