Functions and relations are a HUGE part of algebra!  As such you want to take the time to learn all the terms and language that goes with this most important topic.  Just as a start a relation is a collection of points like (1, 3), (6, 9), (0, 5), etc.  A function is a special type of relation or collection of points.  Of course your study of relations and functions will go much deeper than this basic overview but this introduction will get you off to a good start – study hard!


some key topics that involve functions and relations:

* sets of ordered pairs
* vertical line test
* range and domain
* function operations
* function inverse