2. What is the domain of the relation described by the set of ordered pairs {(-2, 8),(-1, 1), (0, 0), (3,5), (4,-2)}?
O

{-2, -1,0,3,4}
O
{-2, -1,0, 1,5}
O
{-2, -1, 0,4,5)
{-2,0, 1, 5, 8)