1. Study Guide(Due Today) Complete WAM 13-16 Test Tomorrow

2. Learning Targets I can describe the characteristics of a function.
I can recognize a function in any form.
I can determine if relations are functions.
I can tell how a function is different from a relation
I can tell why it is important to know which variable is the independent variable.
I can determine the best way to represent a function.
I can represent relations and functions using tables, graphs, words, and algebraic equations.

3. Study Guide Answers 1. B. 2. D. 3. A, B
12.
13. D.
14. D.
15. B.
16. D.
17. A
18. D.
19. C
1. B.
2. D.
3. A, B
4. 1 should map to both 2 and 4.
5. D.
6. A.
7. D
8. D
9. C.
10. C.
11. B

4. Grade
Missed
Grade 1 95 11 45 2 90 12 40 3 85 13 35 4 80 14 30 5 75 15 25 6 70 16 20 7 65 17 8 60 18 10 9 55 19 50

5. What is the domain of the relation {(2,1), (4,2), (3,3), (4,1)}
{2, 3, 4, 4}
{1, 2, 3, 1}
{2, 3, 4}
{1, 2, 3}
{1, 2, 3, 4}
Answer Now

6. What is the range of the relation {(2,1), (4,2), (3,3), (4,1)}
{2, 3, 4, 4}
{1, 2, 3, 1}
{2, 3, 4}
{1, 2, 3}
{1, 2, 3, 4}
Answer Now

7. Domain: { ____, ____, ___, ____}
Relation = { (3,5),(-2,8),(-3,8),(0,-6) }
Domain: { ____, ____, ___, ____}
Range: {____ , ___, ____}

8. Example 1: Represent the following relations as a set of ordered pairs.-2 5 6 -3 2 7
{ }
(-2, 2)
(0, -3)
(5, 7)
(6, 7)

9. Functions can be represented four different ways:
A ___________ is a relation in which no number in the
_________ is __________. (the x-value can not
repeat)
function
domain
repeated
Functions can be represented four different ways:
1. ______________
2. ______________
3. ______________
4. ______________
mapping
graph
table
set of ordered pairs

10. Each element of the domain is only used once.
Example 3: Are the following relations also functions? -2 3 -7 -2 3 -7 -4 5 8 -4 5 8
Each element of the domain is only used once.
3 is used twice.
NOT A
FUNCTION
FUNCTION

11. Will all vertical lines cross the graph at only one point?
FUNCTION
Will all vertical lines cross the graph at only one point?
YES. Each x is only used once.

12. Will all vertical lines cross the graph at only one point?D
FUNCTION
Will all vertical lines cross the graph at only one point?
YES. Each x is only used once.

13. Will all vertical lines cross the graph at only one point?
NOT A
FUNCTION
Will all vertical lines cross the graph at only one point?
NO. x =-3 is used twice.

14. Will all vertical lines cross the graph at only one point?F
NOT A
FUNCTION
Will all vertical lines cross the graph at only one point?
NO. x =-2 is used three times.

15. Are all x values used only once?-4 -2 2 -3 3 1
NOT A
FUNCTION
Are all x values used only once?
NO. x = - 4 is used twice.

21. Do the following represent a function?

22. Study Island Unit 4 Review
Kahoot 1
Kahoot 2
Quizziz 1
Quizziz
Homework Review

23. Summarization/Closing
Describe a real- life scenario that is a function. When describing the situation, be sure to correctly apply mathematical language to the scenario. My Ex. Shack’s homeroom is eating at Sister’s buffet. The cost per person is $5. The amount of people is the x-value(domain), the total cost is my y-value(output)