Functions and Relations

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Presentation transcript:

Functions and Relations Section 1.7 and 4.8

Relations and Functions Relation: A set of ordered pairs Example {(5,2), (3,8) (-7,3), (5,4), (-4,8), (10, 6)} Function: A relation that has only one output for each input Example {(2,3), (3,2), (4,2), (5,21), (-2,7)}

Functions Independent Input Domain X Dependent Output Range Y

A Function Must Have Only One Output for each Input 4 7 5 6 Input Output 4 7 5 6 Input Output 4 7 5 6

Vertical Line Test For Functions A relation is a function if and only if no vertical line intersects the graph of the relation at more than one point

Classwork Pg 49 # 4-6, 10-12

Homework Pg 259 # 7-9, 11-19