Consider the given relation.
{(- 2, 3), (- 1, 4), (0,5), (1,6)}The domain of this relation is the set of unique x-values of the coordinates and the range is the set of unique y-values.
Domain:& {- 2, - 1, 0, 1}
Range:& {3, 4, 5, 6}
To show a relation of (x,y) ordered pairs as a mapping, list all of the unique x-values in one vertical list and all unique y-values in another vertical list. Then, use arrows to connect corresponding x- and y-values.
Because each domain value is mapped to only one range value, this relation is a function.
