LG 1: Introduction to Functions


UNIT 8 - Relations/Functions/Graphs                                         
Learning Objective:   BTEOTPSWBAT......
  • determine if a relation is a function by looking at a table, a mapping diagram, or a graph
  • evaluate a function for a given value using an equation or graph
  • State the domain and range of a function using interval notation, determined from a graph
WARM UP - The Basics




1. IS IT A FUNCTION? (from a table)
Since the x value repeats in the first example, it is NOT A FUNCTION! We only care about the x value. 



2. IS IT A FUNCTION? (from a mapping diagram)
In the 2nd example, we would have the ordered pairs (5,2) and (5,9).  You can see that the domain value(x value) repeats so it is NOT A FUNCTION.



3. IS IT A FUNCTION? (from a graph)
Use the vertical line test:















4. EVALUATE THE FUNCTION













5. EVALUATE THE FUNCTION (from a graph)

















7. FINDING DOMAIN/RANGE FROM A GRAPH

Domain & Range from a graph

























































































































































































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Domain and Range Examples wksht.pdf
(103k)
Brant Wilson,
Mar 7, 2014, 6:26 AM
v.4
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relations functions 2.pdf
(333k)
Brant Wilson,
Mar 7, 2014, 6:49 AM
v.4