Direct Variation
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is Direct Variation?
Back
Direct Variation is a relationship between two variables where one variable is a constant multiple of the other. It can be expressed as y = kx, where k is the constant of variation.
2.
FLASHCARD QUESTION
Front
What is the equation of a direct variation?
Back
The equation of a direct variation is in the form y = kx, where k is the constant of proportionality.
3.
FLASHCARD QUESTION
Front
What does the constant of proportionality represent?
Back
The constant of proportionality (k) represents the ratio of y to x in a direct variation, indicating how much y changes for a unit change in x.
4.
FLASHCARD QUESTION
Front
If y = 3x, what is the constant of proportionality?
Back
The constant of proportionality is 3.
5.
FLASHCARD QUESTION
Front
How do you determine if a relationship is proportional?
Back
A relationship is proportional if it can be expressed in the form y = kx, and the graph of the relationship is a straight line that passes through the origin.
6.
FLASHCARD QUESTION
Front
Is the equation y = 7x + 3 proportional?
Back
No, because it does not pass through the origin.
7.
FLASHCARD QUESTION
Front
What is an example of a direct variation equation?
Back
An example of a direct variation equation is y = 2x.
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