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


























































































































































































Ċ
Brant Wilson,
Mar 7, 2014, 6:26 AM
Ċ
Brant Wilson,
Mar 7, 2014, 6:49 AM