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Homework Help: Unsure what kind of problem this is

  1. Nov 9, 2008 #1
    1. The problem statement, all variables and given/known data
    Sydney places three markers at the points (0,0), (1,0) and (0,1) on a sheet of graph paper. She then repeatedly "jumps two of the markers over each other," meaning that the old and new positions are located at four evenly spaced points along a line, as shown. After a while two of the markers are located at (63,-2) and (-108,16). Where is the third?

    2. Relevant equations
    I'm not sure what equations I'm supposed to use

    3. The attempt at a solution
    I graphed it on my graph paper, i'm guessing it has to do something with the distance formula ?

    Any tips to begin ?
  2. jcsd
  3. Nov 10, 2008 #2


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    Science Advisor
    Homework Helper

    Hi asdfsystema! :smile:

    Hint: this is a conservation problem …

    when two of the markers move, what is conserved? :wink:
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