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Open Up - Grade 7 - Mathematics - Unit 2 - Lesson 11

Last updated 4 months ago

7 Nsɛmmisa

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7.RP.2.d

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7.RP.2.d

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7.RP.2.d

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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Asemmisa {{asɛmmisaAhyɛnsode}}

1.

There is a proportional relationship between the number of months a person has had a streaming movie subscription and the total amount of money they have paid for the subscription. The cost for 6 months is $47.94. The point (6,67.94) is shown on the graph below.
What is the constant of proportionality in this relationship?

Asemmisa {{asɛmmisaAhyɛnsode}}

2.

There is a proportional relationship between the number of months a person has had a streaming movie subscription and the total amount of money they have paid for the subscription. The cost for 6 months is $47.94. The point (6,67.94) is shown on the graph below.
What does the constant of proportionality tell us about the situation?

Asemmisa {{asɛmmisaAhyɛnsode}}

3.

There is a proportional relationship between the number of months a person has had a streaming movie subscription and the total amount of money they have paid for the subscription. The cost for 6 months is $47.94. The point (6,67.94) is shown on the graph below.
What does the constant of proportionality tell us about the situation?

Asemmisa {{asɛmmisaAhyɛnsode}}

4.

There is a proportional relationship between the number of months a person has had a streaming movie subscription and the total amount of money they have paid for the subscription. The cost for 6 months is $47.94. The point (6,67.94) is shown on the graph below.
Write an equation that represents the relationship between , the total cost of the subscription, C and m, the number of months. (answer in C = form)

Asemmisa {{asɛmmisaAhyɛnsode}}

5.

The graph shows the amounts of almonds, in grams, for different amounts of oats, in cups, in a granola mix. Label the point (1,k) on the graph, find the value of k

Asemmisa {{asɛmmisaAhyɛnsode}}

6.

To make a friendship bracelet, some long strings are lined up; then, one string is tied in a knot with each of the other strings to create a row of knots. A new string is chosen and knotted with the all the other strings to create a second row. This process is repeated until there are enough rows to make a bracelet to fit around your friend's wrist.
Are the number of knots proportional to the number of rows?

Yes they are proportional.

No they are not proportional.

Asemmisa {{asɛmmisaAhyɛnsode}}

7.

What information do you need to know to write an equation relating two quantities that have a proportional relationship?