Compare Proportional Relationships

Flashcard
•
Mathematics
•
8th 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
How do you identify a proportional relationship from a graph?
Back
A graph represents a proportional relationship if it is a straight line that passes through the origin (0,0).
3.
FLASHCARD QUESTION
Front
What is the constant of proportionality?
Back
The constant of proportionality is the ratio of one quantity to another in a proportional relationship, often represented as 'k'.
4.
FLASHCARD QUESTION
Front
If y = kx, what does 'k' represent?
Back
'k' represents the constant of proportionality in the equation, indicating how much y changes for a unit change in x.
5.
FLASHCARD QUESTION
Front
What is the unit rate?
Back
The unit rate is the ratio of two measurements in which the second quantity is one unit. It is often used to describe speed, price per item, etc.
6.
FLASHCARD QUESTION
Front
How do you calculate the unit rate from a proportional relationship?
Back
To calculate the unit rate, divide the total quantity of the first measurement by the total quantity of the second measurement.
7.
FLASHCARD QUESTION
Front
If a car travels 120 miles in 2 hours, what is its speed in miles per hour?
Back
The speed is 60 miles per hour (120 miles ÷ 2 hours = 60 miles/hour).
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