Direct and Inverse Word Problems
Flashcard
•
Mathematics
•
9th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a direct variation?
Back
A direct variation is a relationship between two variables in which one variable is a constant multiple of the other. If y varies directly as x, then y = kx, where k is a constant.
2.
FLASHCARD QUESTION
Front
What is an inverse variation?
Back
An inverse variation is a relationship between two variables in which the product of the two variables is a constant. If y varies inversely as x, then y = k/x, where k is a constant.
3.
FLASHCARD QUESTION
Front
If 6 men can complete a task in 15 days, how many days will it take for 5 men to complete the same task?
Back
18 days.
4.
FLASHCARD QUESTION
Front
If the speed of a plane increases, what happens to the time taken for a flight?
Back
The time taken decreases, demonstrating an inverse relationship.
5.
FLASHCARD QUESTION
Front
If a car travels 280 miles in 7 hours, how far will it travel in 12 hours?
Back
480 miles.
6.
FLASHCARD QUESTION
Front
How do you calculate the number of workers needed to complete a job faster?
Back
Use the formula: (Initial Workers * Initial Days) / New Days = New Workers.
7.
FLASHCARD QUESTION
Front
What is the formula for direct variation?
Back
y = kx, where k is a constant.
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