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Help Needed

  1. Dec 6, 2007 #1
    Hello I am having trouble with a physics question.
    Could some one please lend me a hand or some tips on how to work this out:

    See link for graph:
    http://img225.imageshack.us/img225/1665/graphht1.jpg

    the question is : Write down the mathematical relationship indicated by this graph.
    Any help would be great
    Thanks
     
  2. jcsd
  3. Dec 6, 2007 #2

    Kurdt

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    Staff Emeritus
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    Gold Member

    This sounds like a homework question. Are you familiar with the general form of the equation of a straight line?
     
  4. Dec 6, 2007 #3

    stewartcs

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    Science Advisor

    Hint: Point-Slope Equation.
     
  5. Dec 6, 2007 #4
    Well first of all, from the straight line NOT going through the origin, you can deduce that the function is LINEAR, but not DIRECTLY PROPORTIONAL.

    To figure out a quantitative relationship (ie a function), we see that two sets of coordinates are needed so as to deduce the "m"(slope) and the "c" in the general linear function

    [tex]y=mx+c[/tex]
     
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