What was the average population of ancient Athens

at least 150,000 athenians

Explanation:

around 50,000 aliens, and more than 100,00 slaves.

what is the question you are trying to ask here

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.