document.write( "Question 478267: how do you find the vertex, axis of symmetry, and direction of the opening of the parabola \r
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Algebra.Com's Answer #327686 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "find the vertex, axis of symmetry, and direction of the opening of the parabola 
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document.write( "Putting into vertex form
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document.write( "the vertex form of a parabola opening right or left,  where(h,k) is the vertex.
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document.write( "1. y^2=-8x 
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document.write( "  (-1/8)y^2 = x   Vertex (0,0), a = (-1/8)<0 opens to the left along x-axis
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document.write( "2. (y-8)^2=-4(x-4)
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document.write( " (1/4)(y-8)^2 +4 = x  Vertex(4,8) a = (-1/4) opens left along y = 8\r
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