1. Chapter 6 Vocabulary Input Output Function
The “X” values of a function
What you plug IN to an equation
The “Y” values of a function
What comes OUT of an equation after you calculate what has been plugged in
A relation where every input has only one output

2. x y x y x y x y Ordered Pair ________ (1, 2) A set of ordered pairs
Relation ________________________________
________________________
We are all related
{(1, 2), (3, 3), (5, 4), (7, 5)} x y x y x y

3. Input
Output
This is called mapping

5. Draw a mapping diagram for the graph
Describe the pattern

6. One input with two outputs
What is a function??
This is not a functional relationship at all!!
Would you go out with me?
Would you go out with me?
Sure! x y y  
One input with two outputs
NOT COOL!
A relation that pairs each input with exactly one output is a function.

7. Is it a function? Input Output -1 1 3 4 5 6 Input Output 3 4 5 6 1 11 3 4 5 6
Input Output 3 4 5 6 1 1
Input Output 1 5 9 13 2 6 4 8

9. The table shows the cost of a collect call.
a. Complete the table.
b. Draw a mapping diagram for the table.
c. Is the relation a function? Explain.
d. List the ordered pairs.
e. Graph the ordered pairs in a
coordinate plane.
f. Describe the pattern. How does the
cost change as the number of minutes
increases?
Minutes 1 2 3 4 5 6 7
Cost $3
$3.25
$3.50

10. 1. A
2. H
3. D

11. Exit Ticket
Draw a mapping diagram of the sets of ordered pairs 1. 2.