Today we learned about AROC, which is an acronym for Average Rates of Change. This comes from the physics equation of Average Velocity which calculates "change in distance/change in time" which means delta "d" over delta "t". Delta means "change in" so an example would be two different distances of 2 m and 10 m. 2 m would represent d1, and 10 m would represent d2. Now that covers the distance. For time, lets say t1 is 2 seconds, and t2 is 4 seconds. Now since delta means "change in", the equation with the variables plugged in will look like this (d2-d1)/(t2-t1) -> (10m-2m)/(4s-2s). The final answer will be 4 m/s.
AROC is essentially the same. It uses the same delta d over delta t equation to find the average rate of change. On a distance-time graph, we can get our average rate of change by using the slope of a secant. This means that on a graph, we draw a straight line that passes at least 2 different points on a curve. We start at (0,0) and we end at the endpoint. This represents our secant and with this, we can use it for average velocity calculations.