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Math Help - Maching a function with a table of values.

  1. #1
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    Maching a function with a table of values.

    Hi, I have another problem that has to do with functions.


    48. Which data set is best described by the function y = –2x 2 + 5x?

    F

    G

    H

    J
    Last edited by Jhevon; July 10th 2010 at 06:51 PM.
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  2. #2
    A Plied Mathematician
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    Is that y=-2x^{2}+5x? You want to use the caret symbol ^ to indicate exponentiation. Or, you can use LaTeX like I just did.

    In any case, the way to see which one fits is to start plugging in numbers. Take your x's, in the left-hand columns, plug them into your function, whatever that is, and see if you get the correct y values.
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  3. #3
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    Quote Originally Posted by Ackbeet View Post
    Is that y=-2x^{2}+5x? You want to use the caret symbol ^ to indicate exponentiation. Or, you can use LaTeX like I just did.

    In any case, the way to see which one fits is to start plugging in numbers. Take your x's, in the left-hand columns, plug them into your function, whatever that is, and see if you get the correct y values.
    Shoot, that was suppose to be a ^2. Copy and paste has failed me. :P Anyways, AH, ok. Thank you. Are you a tutor? You sure talk like one. Er, type I suppose. Thank you so much!
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  4. #4
    A Plied Mathematician
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    You're very welcome. And thank you for your kind words. I hope to be a math and physics teacher someday. And yes, I have done a very great deal of tutoring - that's my first love, really.
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