Arnold F. answered • 03/24/16

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Even though there is a linear relationship between the three running times when you divide a constant (e.g. 3) by each your three resulting quotients do not have to be linear.

Take the 3 numbers 2,3,4; 2 and 4 have an average of 3 but if you divide 3 by 2,3,4 you get 1.5,1,.75 which is not linear.

Do you understand?