Question

y = 18 - 5xThe equation above represents the speed y, in feet per second, of Sheilas bicycle x seconds after she applied the brakes at the end of a ride. If the equation is graphed in the xy-plane, which of the following is the best interpretation of the x-coordinate of the lines x-intercept in the context of the problem?

Answer 1

The graph of the line is:

The x intercept represents the time it took the bicycle to stop.

Therefore the answer is C.