Direct Variation

Direct Variation

Assessment

Flashcard

Mathematics

8th Grade

Hard

CCSS
HSF-LE.A.1B, 6.RP.A.3B, 6.RP.A.1

+3

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 the constant of proportionality.

2.

FLASHCARD QUESTION

Front

What does the constant of proportionality (k) represent in direct variation?

Back

The constant of proportionality (k) represents the ratio of y to x in a direct variation relationship. It indicates how much y changes for a unit change in x.

3.

FLASHCARD QUESTION

Front

If y varies directly with x and y = 84 when x = 16, what is k?

Back

k = 5.25

4.

FLASHCARD QUESTION

Front

If $70 is earned in 5 hours, how much is earned in 22 hours?

Back

$308

Tags

CCSS.6.RP.A.3B

5.

FLASHCARD QUESTION

Front

What is the unit rate if $3.60 is for 3 pounds of apples?

Back

$1.20 per pound

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

6.

FLASHCARD QUESTION

Front

Which graph represents a direct variation?

Back

Graph C represents a direct variation.

Tags

CCSS.8.EE.B.5

7.

FLASHCARD QUESTION

Front

Is the table showing a direct variation if the values are (1, 2), (2, 4), (3, 6)?

Back

Yes; k = 2.

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