Answer:
(b) domain: {-2, 0, 2}, range: {-1, 0, 1}
Explanation:
For the function defined by the table ...
we want the function's domain and range.
__
domain
The domain is the list of x-values for which the function is defined. Here, that list is ...
domain = {-2, 0, 2}
__
range
The range is the list of y-values the function produces. Here, that list is ...
range = {-1, 0, 1}
_____
The domain and range sets are most conveniently listed in order, with duplicates removed.