| Vocabulary | Practice Problems | Unit Rate | Constant of proportionality | Random |
|---|---|---|---|---|
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What is the definition of Unit Rate?
ratio of two measurements in which the second quantity is 1
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You wanted to buy the best deal of chips at the store an 8 oz bag costs $2.50 and a 16 oz bag costs $4.00. Which one is the better deal PER OUNCE.
The 16 oz bag costs $0.25 per ounce while the 8 oz bag costs $0.31 per ounce so the 16 oz bag is a better deal.
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Jeniffer buys 4 tires for $272.
What is the cost of 1 tire?
$68
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What is the constant of proportionality in the equation 4x = 8y?
the constant of proportionality is 2
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What is the constant of proportionality in the equation y=2/3x?
2/3 is the constant of proportionality.
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What is the definition of Ratio?
the quantitative relation between two amounts showing the number of times one value contains or is contained within the other
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What is the equation for the constant of proportionality?
xy=k or k=xy
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Vivi is a drummer for a band. She burns 756 calories while drumming for 3 hours. She burns the same number of calories per hour.
How many calories does Vivi burn per hour?
252 calories
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what is the constant of proportionality in the equation y=7x?
7 is the constant of proportionality.
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What is our lesson about?
Unit Rates as the Constant of Proportionality.
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What is the definition of Proportionality?
The quality of corresponding in size or amount to something else
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What is the constant of proportionality in the equation y=2.5xy=2.5xy, equals, 2, point, 5, x?
2.5
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A box of 15 cookies costs $9.
What is the cost for 1 cookie?
$0.60
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Which equation has a constant of proportionality equal to 10?
A. 10y = 10x B. 3y = 30x C. 10y = 2x D. y = 15x
B. 3y = 30x
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DAILY DOUBLE!!!
Louis bought a set of 20 markers for $6. What is the cost of 1 marker?
$0.30
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What is the definition of Constant?
The numbers or letters that are are not variables in a math problem
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Which equation has a constant of proportionality equal to 10?
A. 10y= 2x B. 3y = 30x C. y = 15x D. 10y= 10x
B. 3y = 30x
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Delilah does 184 jumping jacks in 4 minutes. She does her jumping jacks at a constant rate.
How many jumping jacks can Delilah do per minute?
46 jumping jacks
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What is the constant of proportionality in the equation y=2.5x?
2.5 is the constant of proportionality.
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A baker decorates 42 cupcakes in 30 minutes. She does this at a constant rate. How many cupcakes can the baker decorate per minute?
1.4 cupcakes.
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What is the definition of Constant of Proportionality?
the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality
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Rachel types 162 words in 3 minutes. Rachel types at a constant rate.How many words does Rachel type per minute?
Rachel types 54 words per minute.
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If you spend 70 dollars on 8 movie tickets, how much does one movie ticket cost?
$8.75 per movie ticket
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What is the constant of proportionality in the equation 6y = 3x
1/2 is the constant of proportionality.
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Peter bought 8 lemons $6. What was the cost for 1 lemon?
$0.75
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