The graph shows a journey in a car. Which of the statements most likely describes the journey back to the starting point at the portion of the graph labeled O? (1 point)
The car travels different distances per unit of time, because the portion shows a linear, decreasing function.
The car travels the same distance per unit of time, because the portion shows a linear, decreasing function.
The car travels the same distance per unit of time, because the portion shows a nonlinear, decreasing function.
The car travels different distances per unit of time, because the portion shows a nonlinear, decreasing function.