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# Module 1 lesson 5

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### Module 1 lesson 5

1. 1. Module 1 Lesson 5.notebook 1 September 18, 2013 Identifying Proportional and Non-Proportional Relationships in Graphs Homework: Lesson #5 Problem Set/Quiz 1 Friday Do Now: Check Lesson #4 Problem Set 09/18/13 Module 1, Lesson 5
2. 2. Module 1 Lesson 5.notebook 2 September 18, 2013 Problem Set Solutions (continued)
3. 3. Module 1 Lesson 5.notebook 3 September 18, 2013 Lesson 4 Exit Ticket Review
4. 4. Module 1 Lesson 5.notebook 4 September 18, 2013
5. 5. Module 1 Lesson 5.notebook 5 September 18, 2013 x y Fill in the table below so that y is proportional to x.
6. 6. Module 1 Lesson 5.notebook 6 September 18, 2013 Important Note: Characteristics of graphs of proportional relationships: 1. Points lie in a straight line. 2. Line goes through the origin.
7. 7. Module 1 Lesson 5.notebook 7 September 18, 2013 x y Plot ordered pairs for all the values of the Opening Exercise.
8. 8. Module 1 Lesson 5.notebook 8 September 18, 2013 x y
9. 9. Module 1 Lesson 5.notebook 9 September 18, 2013 Compare Example 1 and Example 3 x y x y
10. 10. Module 1 Lesson 5.notebook 10 September 18, 2013 Closing Questions 1. How are proportional quantities represented in a graph? They are represented in a graph where the points lie on a straight line that passes through the origin. 2. What is a common mistake a student might make when deciding whether a graph of two quantities shows that they are proportional to each other? Both graphs can have points that lie on a straight line, but the graph of the quantities that are proportional to each other also goes through the origin. In addition the graph could go through the origin, but the points do not lie on a straight line.
11. 11. Module 1 Lesson 5.notebook 11 September 18, 2013