The domain of the following relation: R: {(−4, 8), (8, 10), (5, 4), (1, 6), (5, −9)} is
{8, 10, 4, 6, −9}
{−4, 1, 5, 8}
{−4, 8, 5, 1, 5}
No domain exists
{8, 10, 4, 6, −9}
{−4, 1, 5, 8}
{−4, 8, 5, 1, 5}
No domain exists