Direct Variation

Flashcard
•
Mathematics
•
8th Grade
•
Hard
+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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