Direct Variation
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
The amount of money earned on a job is directly proportional to the number of hours worked. If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?
Back
$308
2.
FLASHCARD QUESTION
Front
In a direct variation, y=39 when x=3. Find the value of y when x=2.
Back
26
3.
FLASHCARD QUESTION
Front
Is this a direct variation?
y=2x
Back
yes
4.
FLASHCARD QUESTION
Front
Find the unit rate: $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?
Back
$1.20 per pound
5.
FLASHCARD QUESTION
Front
y varies directly with x, and y is 16 when x is 32. Which equation represents this situation?
Back
y=(1/2)x
6.
FLASHCARD QUESTION
Front
y varies directly with x. If y = 20 when x = 4, what is y when x = -2?
Back
-10
7.
FLASHCARD QUESTION
Front
y varies directly with x. If y = 12 when x = 2, what is the constant of variation?
Back
k = 6
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