The following table describes a walk I recently took. I started at 1:30 and walked until 3:30:

Draw a graph using time walking (in hours) as the horizontal axis and distance walked (in miles) as the vertical axis. What was my average speed for the entire walk? (Don ’ t forget to specify your units.) Can you estimate the instantaneous speeds near the beginning of the walk and near the end of the walk?

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Time walked (miles) Distance 1:30 1:45 0 0.25 2:00 0.5 2:15 0.75 2:30 1.00 2:45 1.50 3:00 2.00 3:15 2.50 3:30 3.00