Question 910361: I need the vertex, Axis of Symmetry,
Found 2 solutions by ewatrrr, richwmiller:
Answer by ewatrrr(24785)   (Show Source):
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Algebraically
Y=-2x^2+4x = -2x(x-2) = 0 roots: 0,2
........
the vertex form of a Parabola opening up(a>0) or down(a<0), 
where(h,k) is the vertex and x = h is the Line of Symmetry
.......
y = -2(x-1)^2 + 2 V(1,2), Axis of Symmetry x = 1, a=-2 <0 Opens Downward
domain: All real Numbers
range [2, −∞ )
Answer by richwmiller(17219)  (Show Source):
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