Jada fill the bathtub before taking a bath and then allows the water to drain when she’s done the graph below models the number of gallons of water. Why in the bathtub overtime TM minutes is the number of gallons of water in the bathtub a function of time.

Answer 1

The graph below models the number of gallons of water in the bathtub over time:

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Number of | \ | \
gallons of water | \| \
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0 T minutes

In this graph, the vertical axis represents the number of gallons of water in the bathtub, and the horizontal axis represents time in minutes (labeled as TM in the question).

The graph shows that the number of gallons of water in the bathtub decreases over time as the water drains out. Hence, the number of gallons of water in the bathtub is a function of time.