1. 2.1 Function and Their Graphs.notebook September 04, 2012
Objective Identify and graph functions
Agenda Warm Up
1. WU
2. check hw
3. Notes scatter plot ws
4. Work
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2. 2.1 Function and Their Graphs.notebook September 04, 2012
Relation a mapping, or pairing, of input values with output values.
Domain input values
Range output values
A relation is a function if each input has exactly one output.
Not a function if any input has more than one output.
Identify the domain and range. Is the relation a function?
2 2 3 1
1 3 2 1
1 1
4 3
3 4
Domain: Domain:
Range: Range:
Function? Function?
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3. 2.1 Function and Their Graphs.notebook September 04, 2012
Vertical Line Test
Graph the relation shown in the diagram.
Use the vertical line test to show whether the relation is a function.
3 1
1
2
2
1 4
Ordered pairs.
3
