SOLUTION: Explain whether or not any pair of points on a line can be used to calculate the slope of the line.

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Question 4593: Explain whether or not any pair of points on a line can be used to calculate the slope of the line.
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
any 2 points on a straight line can be used, yes, since the gradient, m is defined as:

m+=+%28%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29%29

jon