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A piecewise linear function consisting of three parts is plotted in quadrant 1 of a coordinate plane. The x-axis is labeled Time in minutes, and the y-axis is labeled Distance in miles.
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Interpret the key function of the graph for the domain interval 9<t<14
. What scenario can be represented by this portion of the piecewise function?
(1 point)
driving a car at a constant rate for five hours
a runner sprinting at a constant rate starting at minute nine
a cyclist taking a cool down ride at a slower constant pace
a runner resting for 5 minutes
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A runner resting for 5 minutes.
Reason: on 9 < t < 14 the graph is flat (distance not changing), so speed = 0 — the runner is stopped. The other choices imply nonzero speed or wrong time units.
Reason: on 9 < t < 14 the graph is flat (distance not changing), so speed = 0 — the runner is stopped. The other choices imply nonzero speed or wrong time units.
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