Module 1 Lesson 6 Proportional Graphs.notebook
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HW• Module 1 Lesson 6 Problem Set
# 1, 2, 3• CR # 8 Due Wed 12/14
Module 1 Lesson 6 Identifying Proportional
and Non-Proportional Relationships in Graphs
Do Now
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Do Now Extention
Tap
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Lesson 4 Problem Set 21
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Think, Pair, Share! 23
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4 6
6 9
8 12
Work with your partner...
1) The points appear on a line
2) The line goes through the origin.
4 6
6 9
8 12
tap
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Important Note:
Characteristics of graphs of proportional relationships:
1. Points lie in a straight line.2. Line goes through the origin.
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tap
Are the values in the table proportional?
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tap
• What do you know about the ratios in this table?
• What can you predict about the graph of this ratio table?
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Compare Example 1 and Example 3
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Closing Questions1. 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.
Module 1 Lesson 6 Proportional Graphs.notebook
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Module 1 Lesson 6 Proportional Graphs.notebook
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Trade a Problem
Make two graphs, one that is proportional and one that is not. Trade with your partner and determine which of their examples is proportional.
