Identify the domain and the range of each of the following relations
{(4.2, 1.5), (5, 2.2), (7,4.8), (4.2,0)}
The domain of a relation consists of all the x-values, or the first coordinate of each ordered pair in the relation. The range of a relation consists of all the y-values, or the second coordinate of each ordered pair in the relation.
For the given relation, the domain is {4.2, 5, 7} since these are the x-values in the ordered pairs. The range is {1.5, 2.2, 4.8, 0} since these are the corresponding y-values.
Domain: {4.2, 5, 7}
Range: {1.5, 2.2, 4.8, 0}