document.write( "Question 413885: Identify the maximum or minimum (vertex), zeros, and axis of symmetry line and show the graph.\r
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Algebra.Com's Answer #290367 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi
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document.write( "Identify the maximum or minimum (vertex), zeros, and axis of symmetry lin
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document.write( "Using the vertex form of a parabola, \"y=a%28x-h%29%5E2+%2Bk\" where(h,k) is the vertex
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document.write( " y = -x^2+2x+3            |Completing the square
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document.write( " y = -(x-1)^2 +4       |Vertex is Pt(1,4)& a Maximum as Parbola opens downward(a> 0)    x = 1, the line of symmetry
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document.write( " 0 = -(x-1)^2 + 4      4 = (x-1)^2        x = 1 ± 2  {-1,3}
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