document.write( "Question 4528: Tell whether each equation is a circle, parabola, ellipse or hyperbola\r
\n" ); document.write( "\n" ); document.write( "a) (x^2/9) - (y^2/16) = 1
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\n" ); document.write( "b) (x^2/81) + (y^2/64) = 1
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\n" ); document.write( "c) x^2 + y^2 = 25
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\n" ); document.write( "d) y = x^2-2x-8
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\n" ); document.write( "e) (y^2/4) - (x^2/9) = 1\r
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Algebra.Com's Answer #2061 by pushpaharan(47)\"\" \"About 
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a) (x^2/9) - (y^2/16) = 1 -> hyperbola
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\n" ); document.write( "b) (x^2/81) + (y^2/64) = 1 -> ellipse
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\n" ); document.write( "c) x^2 + y^2 = 25 -> circle
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\n" ); document.write( "d) y = x^2-2x-8 -> parabola
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\n" ); document.write( "e) (y^2/4) - (x^2/9) = 1 -> hyperbola
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