Constant of Proportionality

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the constant of proportionality?
Back
The constant of proportionality is the ratio between two proportional quantities, often represented as 'k' in the equation y = kx.
2.
FLASHCARD QUESTION
Front
How do you determine if a table of values is proportional?
Back
A table of values is proportional if the ratio of the y-values to the x-values is constant for all pairs of values.
3.
FLASHCARD QUESTION
Front
What is the unit rate?
Back
The unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.
4.
FLASHCARD QUESTION
Front
If a box of cereal costs $3.59 for 30 oz, how do you find the unit rate per ounce?
Back
Divide the total cost by the total ounces: $3.59 ÷ 30 oz = $0.1197, which rounds to 12 cents per ounce.
5.
FLASHCARD QUESTION
Front
What does the equation y = kx represent?
Back
This equation represents a direct variation where 'y' is directly proportional to 'x' with 'k' being the constant of proportionality.
6.
FLASHCARD QUESTION
Front
If the constant of proportionality is $9 per hour, what does this mean?
Back
It means for every hour, the cost is $9, indicating a direct relationship between time and cost.
7.
FLASHCARD QUESTION
Front
How can you find the constant of proportionality from a table?
Back
To find the constant of proportionality, divide the y-value by the corresponding x-value for any pair of values in the table.
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