Direct, Joint, Inverse and Combined Variation
Flashcard
•
Mathematics
•
8th - 10th Grade
•
Hard
Standards-aligned
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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
If y varies directly as x and y = 22.5 when x = 15, what is the value of y when x = 20?
Back
30
3.
FLASHCARD QUESTION
Front
What is inverse variation?
Back
Inverse variation is a relationship between two variables where the product of the variables is a constant. It can be expressed as j = k/m, where k is a non-zero constant.
4.
FLASHCARD QUESTION
Front
If j varies inversely with m and j = 60 when m = 0.3, what is the value of j when m = -2?
Back
-9
5.
FLASHCARD QUESTION
Front
What is joint variation?
Back
Joint variation is a relationship where a variable varies directly as the product of two or more other variables. It can be expressed as a = kbc, where k is a non-zero constant.
6.
FLASHCARD QUESTION
Front
If a varies jointly as b and c, and a = 15 when b = 4 and c = 5, what is the value of b when a = 60 and c = 5?
Back
16
7.
FLASHCARD QUESTION
Front
What is combined variation?
Back
Combined variation is a relationship that involves both direct and inverse variation. It can be expressed as y = kx/m, where k is a non-zero constant.
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