Question

The range of the following relation: R: {(3, −2), (1, 2), (−1, −4), (−1, 2)} is

{−1, 1, 3}

{−1, −1, 1, 3}

{−4, −2, 2, 2}

{−4, −2, 2}

Answer 1

{4, -2, 2} or d

Answer 2

The range is the y-coordinate of the points
Hence, range = {-2, 2, -4, 2} = {-4, -2, 2)
2 cannot be written twice.