Review: 10.7a Mini-Quiz Make a table. Make a graph. Make a mapping. 1. For the relation: {(5, 3), (–2, –2), (–1, 2), (3, –4), (0, –2)} Make a table. Make a graph. Make a mapping. Write the Domain and Range in set notation. Is the Relation a Function?

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Chapter 10 Quadratic Equations and Functions Lesson 10-7b Relations Functions and Graphs

Objective: The students will solve real world word problems using Relations, Functions and Graphs.

Use a Relation 5. OPINION POLLS The table shows the percent of students satisfied with their grades at the time of the survey. Determine the domain and range of the relation. Answer: The domain is {1996, 1999, 2002, 2005}. The range is {21, 32, 51, 60}.

6. Graph the data.

7. Is the percent of students satisfied with their grades a function of the year? Answer: Yes, it passes the vertical line test because the value for x is never repeated.

8. ENDANGERED SPECIES The table shows the approximate world population of the Indian Rhinoceros from 1986 to 2005. Determine the domain and range for the data provided in the table. D = {1000, 1700, 1900, 2100, 2400}; R = {1986, 1990, 1994, 1998, 2005} D = {5}; R = {4} D = {1986, 1990, 1994, 1998, 2005}; R = {1000, 1700, 1900, 2100, 2400} D = {2005}; R = {2400}

9. Graph the data. A B C D A. C. B. D.

10. Is the Indian Rhinoceros Population a function of the year? Answer: Yes, it passes the vertical line test because the value for x is never repeated.

Lesson Summary: Objective: The students will solve real world word problems using Relations, Functions and Graphs.

Preview of the next Lesson: Objective: The students will complete a practice test on sections 10-4 and 10-7 individually in class.

Homework 612+613/ 61-71 odd

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