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Plot time on the x-axis and velocity on the y-axis.

Notice that velocity is constant for the first two hours, and then has a different constant value for the remaining hour. What do constants look like on a graph?

Consider the Freeway Fatalities problem 1-1... Recall that distance information can be found by calculating the area under a velocity graph.

Graph the data in the table and connect.
Note that distance is measured in miles and time is measured in hours.