Dear Learner,

I hope you find this lesson clear and engaging, with simple demonstrations. The main points are presented in a bulleted format for easy understanding. Enjoy your reading!

• A relation is the set of ordered pairs.
• Domain of a relation is the set containing all the first components of ordered pairs in the relation.
• Range of a relation is the set containing all the second components of ordered pairs in the relation.
• A relation can be described by using the following techniques: set of ordered pairs, relating domain and range, graph, equation, inequalities.