document.write( "Question 934767: Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = -1. \n" ); document.write( "
Algebra.Com's Answer #567790 by josgarithmetic(39621)\"\" \"About 
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Use the distance formula and the definition of parabola. You want the set of points equally distant from (-5,5) as from (x,-1).\r
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\n" ); document.write( "\n" ); document.write( "\"sqrt%28%28x%2B5%29%5E2%2B%28y-5%29%5E2%29=sqrt%28%28y%2B1%29%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28x%2B5%29%5E2%2B%28y-5%29%5E2=%28y%2B1%29%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "Continue simplifying until you have an equation formula of y in terms of x.
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