Final answer:
The domain of G is {2, 1, -7} and the range of G is {-6, 2}.
Step-by-step explanation:
The domain and range of a set of points can be determined by looking at the x-coordinates and y-coordinates of the points. The domain is the set of all x-coordinates and the range is the set of all y-coordinates.
For the set G = {(2, -6), (1, 2), (-7, -6)}, the domain is {2, 1, -7} and the range is {-6, 2}.
So, using set notation, the domain of G is written as {2, 1, -7} and the range of G is written as {-6, 2}.