What is the slope?

Question

A car is going 16 m/s for 15 s.

What is the slope?

Answer 1

Unless I'm missing something in this question, the slope is 16 m/s. Plotting d (y-axis) vs. time (x-axis) gives the slope, which you have already stated. As long as you are traveling at a constant speed you will have a straight line and the slope, regardless of the time or distance would be 16 m/s