Question

Choose the relation with a domain of {−4, −2, 0, 1, 3}.

R = {(3, 2), (1, 8), (1, 2), (0, −5), (−4, 4), (−2, 5)}
R = {(−4, −2), (0, 0), (1, 3)}
R = {(2, 3), (8, 1), (2, 1), (−5, 0), (4, −4), (5, −2)}
R = {(3, 1), (0, 0), (−2, −4)}

Answer 1

@Itinson
The domain is the set of x-coordinates in each of the coordinate pairs of a relation.

Answer 2

Consider the last option --> R = {(3, 1), (0, 0), (−2, −4)}


The domain is the set of x-coordinates and would be { -2, 0, 3}.
So, the last option is NOT the correct answer because the set { -2, 0, 3} is not the same as the set {−4, −2, 0, 1, 3}.