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IM: 8.3.1: Understanding Proportional Relationships (Lesson)

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Last updated 11 months ago
10 questions
1.1: Notice and Wonder: Two Graphs
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Question 1
1.

What do you notice? What do you wonder?

1.2: Moving Through Representations
1.3: Moving Twice as Fast
A ladybug and ant move at constant speeds. The diagrams with tick marks show their positions at different times. Each tick mark represents 1 centimeter.


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Question 2
2.

Lines u and v also show the positions of the two bugs. Which line shows the ladybug’s movement? Which line shows the ant’s movement? Explain your reasoning.

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Are you ready for more?
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1
Refer to the tick-mark diagrams and graph in the earlier activity when needed.


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Question 8
8.

Imagine a bug that is moving twice as fast as the ladybug. On each tick-mark diagram, mark the position of this bug.

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Question 9
9.

Plot this bug’s positions on the coordinate axes with lines u and v, and connect them with a line.

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Question 10
10.

Write an equation for each of the three lines.

Question 3
3.

How long does it take the ladybug to travel 12 cm? The ant?

Question 4
4.

Scale the vertical and horizontal axes by labeling each grid line with a number. You will need to use the time and distance information shown in the tick-mark diagrams.

Question 5
5.

Mark and label the point on line u and the point on line v that represent the time and position of each bug after traveling 1 cm.

Question 6
6.

How fast is each bug traveling?

Question 7
7.

Will there ever be a time when the ant is twice as far away from the start as the ladybug? Explain your reasoning.