State the domain of the relation. a. {−3, −1, 1, 2, 4} b. {−3, −1, 2, 3} c. {0, 1, 3, 4, 5} d. {0, 1, 4} check first to not have this wrong!

A. {-3, -1, 1, 2, 4}



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

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