Algebra 1 Unit 3 Review

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

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

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)}

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

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?

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

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?

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 }

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

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

How long would it take to get to 100 feet? Algebra 1 – Unit 3 Review The equation h(t) = -16t2 + 1600 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?

Algebra 1 – Unit 3 Review ANSWER The equation h(t) = -16t2 + 1600 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

What would be a realistic domain? Algebra 1 – Unit 3 Review The equation h(t) = -16t2 + 1600 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?

Algebra 1 – Unit 3 Review ANSWER The equation h(t) = -16t2 + 1600 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