So,
The domain of a function f(x) is the set of all x values that have an f(x) associated with them.
We are given a graph of the function y = f(x). We can see that all x-values from -3 to 3 have an f(x) associated with them, so the domain of y = f(x) is
[tex]\{ -3 \leq x \leq 3 \}.[/tex]
