The following are true of a mapping:

• It is a visual representation of a relation or of a pairing of inputs with outputs.


• Arrows connect inputs to corresponding outputs.


• It can be used to quickly determine if a relation is a function.


• Data from a mapping can also be represented graphically in a table or as a set of ordered pairs.

Video Transcript (PDF)

The representations below are other ways of pairing inputs with outputs.

{(3, -1), (3, 0), (5, 1), (5, 5), (7, 3)}