Whether the function which reflects the height of the football at t seconds after kickoff.
The function is not a one-to one function.
The given function is, .
It is known that the football will reach ground in few seconds after kickoff. And hence the foot ball will reach the same height at two different times. Thus, the graph of the function is shown below in Figure 1.
From Figure 1, it is observed that the horizontal line intersects the curve at two points, which means it fails the horizontal line test. Thus, it can be concluded that the function is not a one-to-one function.
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