1. 11/12/13 Algebra 1 Warm-up 5.1a


2. NOTES 5.1 & 5.2
FUNCTIONS:
ORDERED PAIRS,
FUNCTION RULES,
AND GRAPHS
Textbook Pgs. 249-260

3. Vocabulary
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4. Example 1: Real-life relation:
Hours
$ Earned
2
14
5
35

Write as a set of ordered pairs

Identify the domain and range

Graph the data

Write a rule
7
49
8
56

5. Example 2: Use an equation
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6. Example 3: Function or Not?

Month
Rain
(in)
2
14
5
5
7
0
8
0
11
12

7. Example 4: Write a function
rule

Do you see a pattern?
Think about… how much is y changing compared to
x? Is y always a certain amount bigger or smaller?

Use a table:

Use a graph:

8. Ex 5: Write a word prob. as a
function

You plan to attend up to 5 art lessons that cost
$12 each.
 Independent
Variable?
 Dependent Variable?

Write the amount you will spend as a function
of the number of lessons you will attend.
(Function Rule):
 Domain?
 Range?

9. Example 6: Analyze a graph

0
1
2
3
4
0.95
1.28
2.27
1.76
2.18
* Explain how you
know that the graph
represents a function
* Describe any trend
in the data

10. Essential Questions:
