document.write( "Question 884154: What is the equation of the ellipse with vertices at (-25, 0), (25, 0) and co-vertices (0, -15), (0, 15)? \n" ); document.write( "
Algebra.Com's Answer #534038 by josgarithmetic(39620)\"\" \"About 
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First two points tell you information to get a;
\n" ); document.write( "and second two points give information to get b.
\n" ); document.write( "The four vertices points also indicate that the center of this ellipse is the origin.\r
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\n" ); document.write( "\n" ); document.write( "a=25 and b=15.
\n" ); document.write( "The ellipse is longer horizontally than vertically.\r
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