Direct Variation
Flashcard
•
Mathematics
•
8th - 9th Grade
•
Practice Problem
•
Hard
Standards-aligned
Vana Marines
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15 questions
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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 a non-zero constant.
2.
FLASHCARD QUESTION
Front
What is the equation for direct variation?
Back
The equation for direct variation is y = kx, where k is the constant of variation.
3.
FLASHCARD QUESTION
Front
If y varies directly with x and y = 16 when x = 32, what is the constant of variation (k)?
Back
k = y/x = 16/32 = 1/2.
4.
FLASHCARD QUESTION
Front
Is the equation y = 2x + 1 a direct variation?
Back
No, because it includes a constant term (1) that does not allow y to vary directly with x.
5.
FLASHCARD QUESTION
Front
What does it mean if y varies directly with x?
Back
It means that as x increases or decreases, y changes in direct proportion to x.
6.
FLASHCARD QUESTION
Front
If y = 3x, what is the constant of variation?
Back
The constant of variation (k) is 3.
Tags
CCSS.HSF-LE.A.1B
7.
FLASHCARD QUESTION
Front
How can you tell if an equation represents direct variation?
Back
An equation represents direct variation if it can be written in the form y = kx, with no additional constant term.
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