Bradley is returning home from a place that is 2 kilometers away. The function y = 2,000 − 90x represents Bradley's distance from home in meters, y, in relation to the number of minutes he walks, x.

Which statements about this function are true?

The function is a linear function.
The function is a nonlinear function.
The function does not change at a constant rate.
The function is an increasing function.
The function changes at a co