Final answer:
The domain of the set of points (-7,3), (-2,-4), (3, 2), (5, 6) is {-7, -2, 3, 5}; these are the x-coordinates of the points.
Step-by-step explanation:
The domain of a set of points in coordinate geometry is the set of all x-values for those points. For the set of points (-7,3), (-2,-4), (3, 2), (5, 6), the domain is the collection of the x-coordinates from these ordered pairs. Therefore, the domain of the given set of points is {-7, -2, 3, 5}.