Can someone help me with this? I have no clue how to do this

Answer:
It is a function, Domain: [-8, 15], Range: [7, 9]
Step-by-step explanation:
We can see that it is a function because there are no y values with the same x value. Then to get the Domain and range, we can plot on desmos to find the domain and range.
Domain: -8 <= x <= 15
Range: 7 <= x <= 9
(Interval notation is listed above)