document.write( "Question 522351: How do you compose an equation from a quadratic graph? The vertex is (-1,-9) The y-intercept is -8, The x intercepts are -4 and 2, and the axis of symmetry is -3 on the x axis. \n" ); document.write( "

Algebra.Com's Answer #346833 by scott8148(6628) $\"\"$ $\"About$

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the general vertex form is ___ y = a(x - h)^2 + k , where (h,k) is the vertex and \"a\" is a constant term\r
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\n" ); document.write( "\n" ); document.write( "y = a(x + 1)^2 - 9\r
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\n" ); document.write( "\n" ); document.write( "-8 = a(0 + 1)^2 - 9 ___ 1 = a(1)^2 ___ 1 = a\r
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\n" ); document.write( "\n" ); document.write( "y = (x + 1)^2 - 9 ___ or ___ y = x^2 + 2x - 8 \n" ); document.write( "

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