Hi there! :)
![\large\boxed{[-6, 6]}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B%5B-6%2C%206%5D%7D)
The domain of a graph consists of its x-values.
In this graph, we can see endpoints at the value x = -6 and x = 6.
Thus, the domain is from x = -6 to 6.
Since we have endpoints, however, we can use closed brackets "[]" to denote the domain in interval notation. Therefore, the domain of this function is:
[-6, 6].