Riley is training to run a 5-mile race. The graph represents the distance (miles) she ran with respect to time (minutes) in her first training run. Over which time interval did she run the fastest, [0,8] or [2,11]? Justify your answer in 1–2 sentences.
To determine which time interval Riley ran the fastest, we can compare the slope of the graph in each interval. In the [0,8] time interval, the graph has a steeper slope, indicating that Riley ran at a faster pace during this time. Therefore, Riley ran the fastest in the [0,8] time interval.
