Exercise 1 Page 271

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 : Range : {- 2, - 1, 0, 1} {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.