Direct variation

Direct variation

Assessment

Flashcard

Mathematics

8th Grade

Hard

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22 questions

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1.

FLASHCARD QUESTION

Front

Eduardo counted ten seconds between seeing lightning and hearing thunder, and he knew that the lightning was about 2 miles away. What is the constant of variation?

Back

k = 5

2.

FLASHCARD QUESTION

Front

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. What is the constant of variation?

Back

k = 6.15

3.

FLASHCARD QUESTION

Front

At top speed, a rabbit can cover 7 miles in 12 minutes. What is the constant of variation?

Back

k = 7/12

4.

FLASHCARD QUESTION

Front

A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the constant of variation?

Back

k = 13

5.

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

6.

FLASHCARD QUESTION

Front

In a direct variation, y=39 when x=3. Find the value of y when x=2.

Back

26

7.

FLASHCARD QUESTION

Front

Is this a direct variation?
y=2x

Back

yes

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