Intro
Any set of ordered pairs is called a relation.
{(0, 0), (1, 8), (2, 16), (3, 24), (4, 32)}
The input values are the x-coordinates.
The output values are the y-coordinates.
A mapping diagram describes a relationship by linking the input values to the corresponding output values using arrows.
Example Matching Ordered Pairs and Mapping Diagrams
Write the set of ordered pairs that corresponds to each mapping diagram.
a.
b.
c.
Solution
a. {(−2, 3), (−1, 2), (0, 1), (1, 0)}
b. {(0, 1), (1, 2), (2, 2), (3, 4)}
c. {(1, −1), (1, 1), (4, 2), (4, −2)}