Step-by-step explanation:
Part A.
In part 1, the bus drives pretty linearly.
In part 2, the bus is at a stop.
In part 3, the bus drives much faster, as the slope is much larger.
In part 4, the bus is at a stop.
In part 5, the bus comes back to its starting point.
Part B. The bus is increasing in parts 1 and 3, decreasing in part 5, and at a constant at parts 2 and 4.
Part C. The graph is non-linear, as the slope is not at a constant.
Hope this helps