Lesson 5 Formalizing Relations and Functions.notebook
February 02, 2016
Lesson 5 (PH Text 4.6): Formalizing Relations and Functions
Objectives: To determine whether a relation is a function
To find the domain and range of a relation and use function notation
Relation­ is a set of one or more ordered pairs
Domain­ is the set of all first elements or x­coordinates ( x­ values ) – the set of all possible input values
Range­ is the set of all second elements or y­coordinates ( y­ values ) – the set of all possible output values Jan 27­7:49 AM
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Lesson 5 Formalizing Relations and Functions.notebook
February 02, 2016
Another way to test to see if a relation is a function is by
using the vertical line test .
If any vertical line passes through more than one point of the
graph, the relation is NOT a function.
Jan 27­8:10 AM
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Lesson 5 Formalizing Relations and Functions.notebook
February 02, 2016
Is the relation a function? Use the Vertical Line Test.
1.) { 4, 2), (1, 2), (0, 1), (-2, 2), (3, 3)}
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Lesson 5 Formalizing Relations and Functions.notebook
February 02, 2016
Jan 27­9:55 AM
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Lesson 5 Formalizing Relations and Functions.notebook
February 02, 2016
Jan 27­10:00 AM
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