The point (4,9) corresponds to the number of birds in the population when the biologists discovered it.
The function is a type of relation, or rule, that maps one input to a specific single output.
Biologists discovered an invasive bird species on an island.
The function fff models the population size (in hundreds of birds) for this species as a function of time (in months) after being discovered.
The population drops after 4 months making that the maximum the population of the fish.
The answer will be (4,9) the vertex of the parabola which is basically the top of the peak.
The point (4,9) corresponds to the number of birds in the population when the biologists discovered it.
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