Proportional Relationships in Graphs

If the relationship between x and y is proportional, what point on the line will indicate the unit rate of that relationship?

• (2, p)

• (0.3, s)

• (2.8, g)

• (1, w)

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According to the information given on the graph, how much would 20 boards cost?

• $200

• $400

• $80

• $120

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Does the graph represent a proportional relationship? Make sure to explain your answer

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What do the points on the graph mean? Select all the correct answers.

• After 2 weeks, you have saved $94

• After 94 weeks, you have saved $2

• After 10 weeks, you save $94

• After 4 weeks, you have saved $188

• After 0 weeks, you have save $10

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According to the graph, what is the constant of proportionality?

• 5

• 3

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What is the unit rate for the number of hours of study each week per class?

• 25 hours

• 5 hours

• 7 hours

• 10 hours

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What is the constant of proportionality of the graph? Explain how you know.

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The graph shows the cost of oranges per bag. What is the cost of 4 bags of oranges?

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Samir believes this graph is proportional and that the C.O.P is 3. Do you agree with the Samir. Explain why or why not.

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