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Domains and Ranges of Continuous and Discrete Graphs
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The objectives and purpose
The Objectives:
How to Identify Functions, Find Domain and Range of Relations, and Functions.
Finding the domain and range
Purpose:
The purpose is to find how many points are given for each place of the Texas Relay.
Conclusion
Now you know how to find domain and range of relations and functions, and how to identify functions.
Vocabulary
Domain-Is the set of the first coordinates(or the X values)of the ordered pairs.
Range-Is the set of the second coordinates(or the Y values) of the ordered pairs.
Relation-A set of ordered pairs
Function-A special type of relation that pairs each domain value with one range value.
Practice
Now you try.Find the domain and range.
The Representations
Of Relations
1.
3.
{(0,0) (3,1) (6,2) (9,3) (12,4)}
2.
{(-1,5) (0,3) (1,5) (2,11) (3,21)}
{(1,2) (2,3) (3,4) (5,6) (6,7)}
Identifying Functions
Finding the Domain and Range of a Relation
The domain is found with the smallest and largest X-values.The range is found the way with the Y-values,