Discussion:  Understanding Distance, Speed, and Time Relationships Using Simulation Software tool 
Topic:  Runners Activity: Some Observations 
Related Item:  http://mathforum.org/mathtools/tool/13171/ 
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Subject:  RE: Runners Activity: Some Observations 
Author:  Chris T. 
Date:  Jun 27 2006 
> Especially since you are trying to do it in an arena where the x and
> y units are not the same. The usual way to get linear equations to
> be perpendicular is to have one slope be the negative reciprocal of
> other. With the limitation of the stepping that only works when the
> step size is 1, but only if the X and Y unit intervals are the same.
> Interesting!
Thanks for the feedback, ihor. Problems like this inspire me to put on my
technology design hat and wonder why they used rectangles instead of squares for
the grid. I think they did it because the rectangles match the dimensions of
the computer screen, giving more space on the xaxis than they would have
otherwise. Both the squares and rectangles methods have their advantages and
disadvantages.
Best,
Chris
 
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