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## Algebra 1

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**Algebra 1**Unit 3 Review**Algebra 1 – Unit 3 Review**–7 2 16 5 3 1 3 6 -5 4 • Is each of the following relations also a function? Explain. • 1) • 2) • 3)**Algebra 1 – Unit 3 Review**–12 6 24 3 1 3 9 4 –9 0 ANSWER • Is each of the following relations also a function? Explain. • 1) • 2) Not a function Function • 3) Not a function**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)}**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**Algebra 1 – Unit 3 Review**• The following shows the World Series winners since 2009: • Is this relation also a function? • What is the independent variable? • What is the dependent variable?**Algebra 1 – Unit 3 Review**ANSWER • The following shows the World Series winners since 2009: • Is this relation also a function? • What is the independent variable? • What is the dependent variable? yes year World Series Champion**Algebra 1 – Unit 3 Review**• The following shows the World Series winners since 2009: • What is the domain? • What is the range?**Algebra 1 – Unit 3 Review**ANSWER • The following shows the World Series winners since 2009: • What is the domain? • What is the range? { 2009, 2010, 2011, 2012, 2013 } { NY Yankees, SF Giants, St. Louis Cardinals, Boston Red Sox }**Algebra 1 – Unit 3 Review**• Which graph best matches the data in the table?**Algebra 1 – Unit 3 Review**ANSWER • Which graph best matches the data in the table? The red curve**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**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