Answer: A. {-3, -1, 1, 2, 4}
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Explanation:
The domain is the set of possible inputs of a function or relation
In other words, its the set of x values/coordinates.
In this case, the x coordinates of the points are -3, -1, 1, 2, 4 which is why the domain is {-3, -1, 1, 2, 4} pointing to choice A
Note: any duplicate x value is tossed out, so we don't list x = 4 three times.
Another note: This relation is NOT a function because x = 4 leads to multiple y values. The graph does not pass the vertical line test
