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Unit Rate and Proportional Relationships Test Re ...
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What is the meaning of the unit rate in context?
10 cm/min
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How is a proportion formed?
2 or more equivalent ratios
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Explain 2 ways you can know this data is NonProportional.
Ratios of y/x are not equal and it does not pass through the origin
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Is the data proportional? If yes, what is the value of k?
Proportional, k = -5/2 or -2.5
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Kevin put 5 gallons of gas in his car and it cost him $10.50. How much did each gallon of gas cost that Kevin pumped into his car?
$2.10 per gallon
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This distance traveled is proportional to time. What is k?
k = 45 or 45 mi/hr
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Proportional or NonProportional?
NonProportional
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Is the data proportional? If yes, what does k =
Yes - it is straight and through the origin; k = 1000
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This data is proportional. What is the equation of the line?
y = 6x
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P or NP
Proportional
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How is a unit rate expressed as a ratio with a _____________ of _______
Ratio with a denominator of 1
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Jess walked 6.5 miles in 2 hours. If she continues at this rate, how many miles can she walk in 4.5 hours? Round to the nearest whole number
About 15 miles
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Is this data proportional? If yes, write an equation using the constant of proportionality.
y = 18.5x
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What is the better deal: 13 lb bag for $25.50 or a 27 lb bag for $32.25. Which bag is the better buy?
27 lb bag
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How do you write the equation of a proportional relationship?
y = kx
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Is the data Proportional or NonProportional? Explain.
NP - doesn't pass through the origin
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Proportional or Non Proportional?
Proportional
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What is the meaning of the unit rate in context?
3 ft/min
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Is this data proportional? If yes, what is the value of k?
Yes, k=1.5
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How many lines represent a proportional relationship?
1
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How do you know the data is proportional?
k = 3 for all ratios of y/x
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