Question

The range of the following relation: R {(3, -5), (1, 2), (-1, -4), (-1, 2)} is

{-1, 1, 3}
{-5, -4, 2}
{-1, -1, 1, 3}
{-4, -5, 2, 2}

Answer 1

@Michele_Laino can you help?

Answer 2

the answer is {-4,-5,2,2}

Answer 3

here the requated range is the set of all values of y-coordinates, namely the set of all second components of your pair of coordinates, the repeated elements count only one time:
{-5, 2, -4}