Relation
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Definition of Relation
A set of input and output values, usually represented in ordered pairs, refers to a Relation.
More about Relation

Relation is generally represented by a mapping diagram and graph
Example of Relation

The mapping diagram of the relation {(1, 2), (3, 6), (5, 10)} is shown below.
Video Examples: Relations and Functions
Solved Example on Relation
Ques: Choose a graph that represents the relation {(3,  4), (5,  4), ( 6,  4), (2, 3)}.
Choices:
A. Graph 3B. Graph 1
C. Graph 4
D. Graph 2
Correct Answer: D
Solution:

Step 1: Graph each ordered pair on a coordinate plane
Step 2: The graph that represents the relation {(3,  4), (5,  4), ( 6,  4), (2, 3)} is Graph 2
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