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Rachel98
Give the domain and range of the relation. Tell whether the relation is a function. How do you find the domain and range of a circle graph? For example, the one in the comments.
The domain would conventionally be defined as \[D=\left\{ x \in \mathbb{R} : -3 \le x \le3 \right\}\] Does this help you to find the range?
So the range would be 2 ≤ Y ≤ - 2?