1. Do Now 5/19/10 Take out HW from last Thursday.
“Basketball” worksheet
Punchline worksheets #122
Copy HW in your planner.
Text p. 388, #8-22 evens and #19

2. “Basketball”
Read the table on the “Basketball” worksheet. Complete #1-6 using the information provided.
1) 74.1%
2) 37.5%
3) 62.5%
4) a. 83 free throws; 249 free throws;
b. 36.1%
5) a. 97 free throws; 194 free throws;
b. 6.7%
6) He made 67% of his free throws in practice, which is below his season average of 69%.

3. Homework Punchline worksheet #122
“Why Did the Flying Saucer Have “U.F.O” Printed On It?”
IT TOOK UNLEADED FUEL ONLY

4. Chapter 8 “Relations and Functions”
Section 8.1 “Relations and Functions”
Section 8.2 “Linear Equations in Two Variables”
Section 8.3 “Using Intercepts”
Section 8.4 “The Slope of a Line”
Section 8.5 “Slope-Intercept Form”
Section 8.6 “Writing Linear Equations”
Section 8.7 “Function Notation”
Section 8.8 “Systems of Linear Equations”
Section 8.9 “Graphs of Linear Inequalities”

5. Objective
SWBAT use graphs to represent relations and functions

6. Section 8.1 “Relations and Functions”
Age (years), x 2 4 5 7
Length (in.), y 32 59 65 69 96
The relationship between age and length can be
represented using ordered pairs.
(2, 32), (4, 59), (5, 65), (5, 69), (7, 96)
The ordered pairs form a RELATION.
RELATION
a pairing of numbers from one set, called the DOMAIN, with the numbers in another set, called the RANGE.

7. RELATION- DOMAIN contains numbers called INPUTS
Consists of the following:
DOMAIN contains numbers called
INPUTS
RANGE contains numbers called
OUTPUTS
The INPUTS are the X-coordinates and the OUTPUTS are the Y-coordinates.

8. RELATION Set 1 Set 2 Domain Range Input Output X-coordinate
a pairing of numbers from one set, called the DOMAIN, with the numbers in another set, called the RANGE.
Set 1
Set 2
Domain
Range
Input
Output
X-coordinate
Y-coordinate

9. RELATION x 2 4 6 8 y 1 3
In addition to using ordered pairs or a table to represent a relation, you can also use a GRAPH or a MAPPING DIAGRAM.
MAPPING DIAGRAM
GRAPH
Input
Output

10. Represent the relation as a graph and mapping diagram.
(1,10), (2, 15), (3, 10), (3, 20), (4, 25)
MAPPING DIAGRAM
GRAPH
Input
Output 1 2 3 4 10 15 20 25

11. The domain is the set of inputs: 10, 12, 13,
Identify the domain and range of a relation
The input-output table shows the cost of various amounts of regular unleaded gas from the same pump. Identify the domain and range of the relation. 10
Input gallons
Output dollars 12 13 17
19.99
23.99
25.99
33.98
19.99, 23.99, 25.99, and
The domain is the set of inputs:
10, 12, 13,
and 17.The
range is the set of outputs:

12. Each input must be paired with only ONE output
FUNCTION-
Is a relation in which for each input there is EXACTLY ONE output.
FUNCTION
NOT A FUNCTION
3 5
Each input must be paired with only ONE output

13. FUNCTION-
Is a relation in which for each input there is EXACTLY ONE output.
FUNCTION
NOT A FUNCTION
When a relation is represented as a graph, you can use the VERTICAL LINE TEST. If you can draw a vertical line through any two points on the graph, then the relation is NOT a function.

14. “To Be or Not To Be” a FUNCTION1 2
Output 12 9 6 3
Input 3 2 1
Output 7 4
Input
FUNCTION
NOT A FUNCTION
2 4 7
The pairing is a function because each input is paired with exactly one output.
The pairing is not a function because each input is
not paired with exactly one output.

15. Homework
Text p. 388, #8-22 evens and #19