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More Linear Relationships: IM 8.3.6
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1. Lesson 8.3.6
- IM 8.3.6 Lesson: More Linear Relationships
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2. Practice 8.3.6
- IM 8.3.6 Practice: More Linear Relationships
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More Linear Relationships: IM 8.3.6
IM 6 – 8 Math, GeoGebra Classroom Activities, Aug 6, 2020
“More Linear Relationships” from IM Grade 8 by Open Up Resources and Illustrative Mathematics. Licensed under the Creative Commons Attribution 4.0 license.
Table of Contents
- Lesson 8.3.6
- IM 8.3.6 Lesson: More Linear Relationships
- Practice 8.3.6
- IM 8.3.6 Practice: More Linear Relationships
IM 8.3.6 Lesson: More Linear Relationships
Look for a growing pattern. Describe the pattern you see.
If your pattern continues growing in the same way, how many tiles of each color will be in the 4th diagram?Font sizeFont size
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The 5th diagram?
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The 10th diagram?
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How many tiles of each color will be in the th diagram?
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Explain your reasoning.
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Here are 6 graphs and 6 different situations. Match each situation to a graph.
Explain what the slope means in the situation.
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Pick one proportional relationship and one non-proportional relationship and answer the following questions about them.
How can you find the slope from the graph? Explain or show your reasoning.
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Lin has a summer reading assignment. After reading the first 30 pages of the book, she plans to read 40 pages each day until she finishes. Lin makes the graph shown here to track how many total pages she'll read over the next few days.
Find the point where the line crosses the vertical axis. What does that point tell you about the situation?
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After day 1, Lin reaches page 70, which matches the point she made on her graph. After day 4, Lin reaches page 190, which does not match the point she made on her graph. Lin is not sure what went wrong since she knows she followed her reading plan.
Sketch a line showing Lin's original plan on the axes.
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What does the vertical intercept mean in this situation?
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How do the vertical intercepts of the two lines compare?
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What does the slope mean in this situation?
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How do the slopes of the two lines compare?
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Jada's grandparents started a savings account for her in 2010. The table shows the amount in the account each year.
If this relationship is graphed with the year on the horizontal axis and the amount in dollars on the vertical axis, what is the vertical intercept?Font sizeFont size
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What does it mean in this context?
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IM 8.3.6 Practice: More Linear Relationships
Explain what the slope and intercept mean in each situation.
A graph represents the perimeter, , in units, for an equilateral triangle with side length units. The slope of the line is 3 and the -intercept is 0.
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The amount of money, , in a cash box after tickets are purchased for carnival games. The slope of the line is and the -intercept is 8.
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The number of chapters read, y, after x days. The slope of the line is and the y-intercept is 2.
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The graph shows the cost in dollars, , of a muffin delivery and the number of muffins, , ordered. The slope of the line is 2 and the -intercept is 3.
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Customers at the gym pay a membership fee to join and then a fee for each class they attend. Here is a graph that represents the situation.
What does the slope of the line shown by the points mean in this situation?Font sizeFont size
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What does the vertical intercept mean in this situation?
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| The graph shows the relationship between the number of cups of flour and the number of cups of sugar in Lin’s favorite brownie recipe. | The table shows the amounts of flour and sugar needed for Noah’s favorite brownie recipe. |
 |  |
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Noah and Lin buy a 10-cup bag of flour and divide it evenly to make their recipes. If they each use all their flour, how much sugar do they each need?
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