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Y=a(x-b)^2+P Does Y intersect X axis? 1) a<0 2) P>0

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Y=a(x-b)^2+P Does Y intersect X axis? 1) a<0 2) P>0 [#permalink] New post 21 Apr 2006, 03:52
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Y=a(x-b)^2+P Does Y intersect X axis?

1) a<0
2) P>0
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 [#permalink] New post 21 Apr 2006, 13:27
It should be C.

a<0, indicates parabola opens downwards.
p>0, indicates that the vertex of parabola is above the x-axis
Hence it intersects the x-axis.
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  [#permalink] 21 Apr 2006, 13:27
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Y=a(x-b)^2+P Does Y intersect X axis? 1) a<0 2) P>0

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