Which numbers belong to the range of the relation {(4, –1), (–7, 2), (1, 2), (2, 1)}?
choose the correct answer.
a. 2
b. 1
c. –1
d. –7

The correct answers to this question are A, B and C. The range that is being referred here is the y values of the given x and y coordinates.
(4, -1) has a y value of -1.
(-7, 2) and (1, 2) has a y value of 2.
(2, 1) has a y value of 1.

So the y values are -1, 2, and 1