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I have the first point is (0, -100) and the second point is (7500, -250), and the maximum point is at (x, 210).

Is it possible to find X or the equation of the parabola using this information alone?

If so how?

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    Parabolas don't have a "first" and "last" point. Presumably, you are talking about a portion of the parabola.2011-03-15
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    I am talking about where it crosses the x axis. I edited the question to reflect that.2011-03-15
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    @garbagecollector: Neither $(0,-100)$ nor $(7500,-250)$ are on the $x$-axis, so how could they possibly be the intersections of the parabola with the $x$-axis?2011-03-15
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    @Arutro I edited the wrong question on accident.2011-03-15
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    @garbagecollector: Parabolas still don't have a "first" or "last" point. They are infinite curves.2011-03-15
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    @Arturo I am learning alot more than i bargained for. I have updated the question once more. Again, those are the only two points I am aware of.2011-03-15

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