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