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Homework Help: 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 [Broken]

    the question is : Write down the mathematical relationship indicated by this graph.
    Any help would be great
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Dec 6, 2007 #2


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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


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    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

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