1. Algebra 1
Unit 3 Review

2. Is each of the following relations also a function? Explain.
Algebra 1 – Unit 3 Review
Is each of the following relations also a function? Explain. 1) 5 3 –7 2 16 2) 1 3 6 -5 4 3)
First name
Last name
Joseph
Smith
Erin
Ramos
Maude
Morgenstern
Villa
Heather
Mackenzie

3. ANSWER Is each of the following relations also a function? Explain. 1)
Algebra 1 – Unit 3 Review
ANSWER
Is each of the following relations also a function? Explain. 1) 3 1
–12 6 24 2) 3 9 4 –9
Not a function
Function 3)
First name
Last name
Joseph
Smith
Erin
Ramos
Maude
Morgenstern
Villa
Heather
Mackenzie
Not a function

4. Is each of the following relations also a function? Explain.
Algebra 1 – Unit 3 Review
Is each of the following relations also a function? Explain. 1) 2)
3) {(4, -3), (5, 6), (-9, 2), (0, 6)}

5. ANSWER Is each of the following relations also a function? Explain. 1)
Algebra 1 – Unit 3 Review
ANSWER
Is each of the following relations also a function? Explain. 1) 2)
Function
Not a function
3) {(4, -3), (5, 6), (-9, 2), (0, 6)}
Function

6. The following shows the World Series winners since 2009:
Algebra 1 – Unit 3 Review
The following shows the World Series winners since 2009:
year
World Series Champion
2009
New York Yankees
2010
San Francisco Giants
2011
St. Louis Cardinals
2012
2013
Boston Red Sox
Is this relation also a function?
What is the independent variable?
What is the dependent variable?

7. ANSWER The following shows the World Series winners since 2009:
Algebra 1 – Unit 3 Review
ANSWER
The following shows the World Series winners since 2009:
year
World Series Champion
2009
New York Yankees
2010
San Francisco Giants
2011
St. Louis Cardinals
2012
2013
Boston Red Sox
Is this relation also a function?
What is the independent variable?
What is the dependent variable?
yes
year
World Series Champion

8. The following shows the World Series winners since 2009:
Algebra 1 – Unit 3 Review
The following shows the World Series winners since 2009:
year
World Series Champion
2009
New York Yankees
2010
San Francisco Giants
2011
St. Louis Cardinals
2012
2013
Boston Red Sox
What is the domain?
What is the range?

9. ANSWER The following shows the World Series winners since 2009:
Algebra 1 – Unit 3 Review
ANSWER
The following shows the World Series winners since 2009:
year
World Series Champion
2009
New York Yankees
2010
San Francisco Giants
2011
St. Louis Cardinals
2012
2013
Boston Red Sox
What is the domain?
What is the range?
{ 2009, 2010, 2011, 2012, 2013 }
{ NY Yankees, SF Giants, St. Louis Cardinals, Boston Red Sox }

10. Which graph best matches the data in the table?
Algebra 1 – Unit 3 Review
Which graph best matches the data in the table?
Time
(sec)
Speed (ft/sec) 30 1 21 2 14 3 9 4 6 5 7 8 10

11. ANSWER Which graph best matches the data in the table? The red curve
Algebra 1 – Unit 3 Review
ANSWER
Which graph best matches the data in the table?
Time
(sec)
Speed (ft/sec) 30 1 21 2 14 3 9 4 6 5 7 8 10
The red curve

12. How long would it take to get to 100 feet?
Algebra 1 – Unit 3 Review
The equation h(t) = -16t can be used to approximate the position of object dropped from 1600 ft where h is its height and t is the time.
Find h(5).
How long would it take to get to 100 feet?

13. Algebra 1 – Unit 3 Review
ANSWER
The equation h(t) = -16t can be used to approximate the position of object dropped from 1600 ft where h is its height and t is the time.
Find h(5).
How long would it take to get to 100 feet?
h(5) = 1200 ft
t  9.68 sec

14. What would be a realistic domain?
Algebra 1 – Unit 3 Review
The equation h(t) = -16t can be used to approximate the position of object dropped from 1600 ft where h is its height and t is the time.
What would be a realistic domain?
What would be the range?

15. Algebra 1 – Unit 3 Review
ANSWER
The equation h(t) = -16t can be used to approximate the position of object dropped from 1600 ft where h is its height and t is the time. The ground is at h = 0.
What would be a realistic domain?
What would be the range?
0 ≤ t ≤ 10 seconds
0 ≤ h ≤ 1600 feet