7R Unit 3 Proportional Relationships Test Review
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•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a proportional relationship?
Back
A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.
2.
FLASHCARD QUESTION
Front
Define the constant of proportionality.
Back
The constant of proportionality is the constant value of the ratio of two proportional quantities, often represented as 'k' in the equation y = kx.
3.
FLASHCARD QUESTION
Front
How do you find the unit rate?
Back
To find the unit rate, divide the quantity by the number of units. For example, if 10 apples cost $5, the unit rate is $5/10 apples = $0.50 per apple.
4.
FLASHCARD QUESTION
Front
What does the term 'ratio' mean?
Back
A ratio is a comparison of two quantities by division, often expressed as 'a to b' or a:b.
5.
FLASHCARD QUESTION
Front
How can you represent a ratio using fractions?
Back
6.
FLASHCARD QUESTION
Front
What is the formula for finding the cost based on a unit rate?
Back
The formula is: Total Cost = Unit Rate × Quantity. For example, if the unit rate is $0.35 per ounce and you buy 20 ounces, the total cost is $0.35 × 20.
7.
FLASHCARD QUESTION
Front
What is the significance of the point (1, k) on a graph of a proportional relationship?
Back
The point (1, k) represents the constant of proportionality, where 'k' is the value of the output when the input is 1.
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