Answer:
D. -2 ≤ y ≤ 2
Step-by-step explanation:
Range of a Relation
It's the set of values the relation takes when x moves into the relation's domain.
It can be graphically determined by placing imaginary horizontal lines from minus infinite to plus infinite. Where the line meets the relation's graph, that value of y belongs to the range.
If we place imaginary horizontal lines from -∞ up to y=-2, we won't meet the relation's graph. Exactly at y = -2, the line and the graph have one point in common.
Moving up the line will meet the graph until exactly y=2, from where there won't be any additional interceptions.
Thus, the range of the relation is [-2,2] or, written in inequality form:
D. -2 ≤ y ≤ 2
