Question

Open Ended

Integrate what you know about rate of change to describe the function below.

Answer 1

First fine the slope of the line, next find the equation y = mx + b, and last integrate with respect to x.

Answer 2

The gradient between first two timepoints is (13.5 - 9.0)/(6-4) = 4.5/2 = 2.25
The gradient between last two timepoints is (18.0-13.5)/(8-6) = 4.5/2 = 2.25

The gradient is constant through these points. What does this mean about the function?