Answer:
The table represents a nonlinear function.
Explanation:
A linear function has a constant rate of change. However, the y values in the table do not have a constant rate of change. 4pi - pi = 3 pi, 9pi - 4pi = 5pi and so on. The values change each time, so it is a nonlinear function.
This is the answer that I got, hopefully I am correct on this one.