By summing the mathematical variables say;X1+X2+X3 Then, dividing by their average 3.
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what exponential function is the average rate of change for the interval from x = 7 to x = 8.
Find the derivative
You measure the change in the vertical direction (rise) per unit change in the horizontal direction (run). The rate of change is constant between A and B if AB is a straight line. Take any two points, A = (xa, ya) and B = (xb, yb) then the average rate of change, between A and B = (yb- ya)/(xb- xa).
if a function is increasing, the average change of rate between any two points must be positive.
It would depend on what is changing and on what timescale. For example, the rate of change of speed (acceleration) can be either ms-2 or miles/hour2.