Final answer:
The domain and range of a relation can be found by looking at the x-values and y-values of the given points. The relation can be represented using a graph and a mapping diagram.
Step-by-step explanation:
The domain and range of a relation refer to the set of all possible x-values and y-values, respectively, in the relation. To find the domain and range of a relation, we need to look at the x-coordinates and y-coordinates of the given points.
For example, in relation 3, the domain is {-2, 1, 3, -4} and the range is {3, 2, -1, -3}. We can represent this relation on a graph by plotting the points and connecting them with a line.
A mapping diagram can also be used to represent the relation. The x-values are mapped to the corresponding y-values using arrows.