Posted by **Ajunb** on Tuesday, January 24, 2012 at 9:21pm.

Why are these poor models for a parabola, Where a ball starts a a certain point and then is hit to reach a maximum height (vertex) and then lands at a certain point

i. y = -0.002x(x - 437.1)

ii. y = -0.5x + 216x + 3

iii. y = -0.002x + 0.879x + 3.981

iv. y = -0.002x + 0.8732x - 3.981

Thanks!

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