Question
A function is given by a table of values, a graph, a formula, or a verbal description. Determine whether it is one-to-one.$f(t)$ is the height of a football $t$ seconds after kickoff.
Step 1
A function is one-to-one if and only if every horizontal line intersects the graph of the function at most once. This means that for every pair of different inputs, the outputs are different. Show more…
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