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Math 7 Proportional Relationships Quiz Review
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Simplify.
4 1/2
Does the table show a proportional relationship? If so, what is the constant of proportionality?
nonproportional
Answer the question above.
Yes, the relationship is proportional, k=0.08, y=0.08x
Does the table show a proportional relationship? If so, state its equation.
y=1/5x or y=0.2x
Answer the question above.
concert is less by 20 cents
And by how much faster?
Tank B by 3/8 gal/min
Does the table show a proportional relationship? If so, state the constant of proportionality.
nonproportional
Find the unit rate: 15 heart beats in 1/4 minute
60 beats/min
Tell whether the graph shows a proportional relationship. Explain.
nonproportional - does not start at the origin
Tell whether the graph shows a proportional relationship. Explain.
proportional, k=3, y=3x
Tell whether the table shows a proportional relationship. Explain.
proportional, k=1/60, y=1/60x
Answer the question above.
A, D
Answer the question above.
14 windows/hour
Answer the question above.
D
Answer the question above.
12 min/mile
Answer the question above.
5/6 cup/serving
Does the graph represent a proportional relationship? If so, state the equation.
y=1/3x
Which graphs represent proportional relationships?
1 and 5
Simplify
4 1/2
A train travels 423 miles every 9 hours. What is the unit rate of the train?
47 mph
Calculate the unit cost: 6 pounds of lobster for $65.94
$10.99/lb
Michael can read 582 words in 3 minutes. At this rate, how many words can he read in 20 minutes?
3,880 words
Which is the better buy? 20 ounces of orange juice for $4.40 or 32 ounces of orange juice for $6.72? By how much cheaper is it?
32 ounce OJ by 1 cent
Simplify
5/18
This week, Kayla worked 16 hours at the grocery store and 24 hours at the library. Write a ratio of the number of hours she worked at the library to the total number of hours she worked in simplest form.
3/5
Car A traveled 208 miles in 4 hours. Car B traveled 245 miles in 5 hours. Which car traveled at a faster rate? How much faster?
Car A by 3 mph
Does the table represent a proportional relationship? If so, state the equation.
y=3x
Answer both questions.
3/4 hr per mile and 1 1/3 mph
1/5 book/hr
Assume the table represents a proportional relationship. Identify the constant of proportionality, then find the missing values
k=3; 5 and 105
The ordered pairs (2, 8), (3, 12), (x, 20) represent a proportional relationship. Find the value of x
x=5


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