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The graph at right shows the distance a bicyclist travels from Oshkosh to a town miles away.

  1. Describe the velocity of the bicyclist.

    The velocity is the slope of a distance graph.

    The velocity is always positive. The bicyclist accelerates between and and then decelerates between and . S/he is moving fastest at .

  2. What is the bicyclist’s average velocity?

    Average velocity between  and 

  3. Approximate the bicyclist’s instantaneous velocity at hours.

    IROC at a point slope of the tangent line at that point.