document.write( "Question 870783: Please help....I cannot help my son with this question.
\n" ); document.write( "What is the equation of the quadratic graph with a focus of (6,0) and a directrix of y=-10?
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Algebra.Com's Answer #525144 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "Horizontal Directrix:  y = -10, Parabola Opens Upward (Focus above it)
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document.write( "F(6,0)
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document.write( "(0-10)/2 = -5  V(6, -5), p = 5
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document.write( "y = (1/4p)(x - 6)^2  - 5
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document.write( "y = (1/20)(x - 6)^2  - 5
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document.write( "the vertex form of a Parabola opening up(a>0) or down(a<0),  
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document.write( "where(h,k) is the vertex  and  x = h  is the Line of Symmetry. a = 1/4p
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document.write( "where  the focus is (h,k + p)
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document.write( "With Directrix y = (k - p)
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