Unit Rates/Constant of Proportionality
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a unit rate?
Back
A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.
2.
FLASHCARD QUESTION
Front
How do you calculate the unit price?
Back
To calculate the unit price, divide the total price by the number of units. For example, if a product costs $2.48 for 10 slices, the unit price is $2.48 ÷ 10 = $0.248 per slice.
3.
FLASHCARD QUESTION
Front
What is the constant of proportionality?
Back
The constant of proportionality is the constant value of the ratio of two proportional quantities. It is often represented as 'k' in the equation y = kx.
4.
FLASHCARD QUESTION
Front
If 3 apples cost $1.50, what is the unit price per apple?
Back
The unit price per apple is $1.50 ÷ 3 = $0.50 per apple.
5.
FLASHCARD QUESTION
Front
What is the equation for a proportional relationship?
Back
The equation for a proportional relationship is y = kx, where k is the constant of proportionality.
6.
FLASHCARD QUESTION
Front
If a car travels 120 miles in 2 hours, what is the unit rate in miles per hour?
Back
The unit rate is 120 miles ÷ 2 hours = 60 miles per hour.
7.
FLASHCARD QUESTION
Front
How do you determine which deal is better when comparing unit prices?
Back
To determine which deal is better, calculate the unit price for each option and compare them. The option with the lower unit price is the better deal.
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