Identify properties of functions represented in graphs.
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In this lesson, students further their analysis of a function graph to find rate of change and initial value. In seventh grade, students found the constant of proportionality in proportional graphs. This lesson prepares students to compare functions across multiple representations in upcoming lessons in this unit, and to determine slope of linear functions in Unit 5.
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The graph below shows the amount of money on a subway card as a function of the number of subway rides taken. Use the graph to answer the questions that follow.
Teacher Version: Grade 8 Unit 5 Lesson 4 is made available by Open Up Resources under the CC BY 4.0 license. Copyright © 2017 Open Up Resources. Download for free at openupresources.org. Accessed Nov. 3, 2017, 11:39 a.m..
Modified by The Match Foundation, Inc.In a laboratory, a scientist is tracking the temperature of a substance over time. Each hour, she takes the temperature and records it in the graph shown below.
The ordered pairs below are from a graph, which is not shown. Based on the ordered pairs, can you determine if the graph is a function?
$${(3,4)}$$ $${(2,5)}$$ $${(1,6)}$$ $${(0,7)}$$ $${(1,8)}$$
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The following resources include problems and activities aligned to the objective of the lesson that can be used to create your own problem set.
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The graph below shows the population of the United States over time using data from the U.S. Census Buraeu.
Annual Estimates of the Residential Population: April 1, 2010 to July 1, 2016 is made available by the U.S. Census Bureau. Accessed Oct. 31, 2017, 3:51 p.m..
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