Bookmark and Share

Direct Variation

This topic covers determining whether a data set has direct variation and forming an equation for the variation. It also covers the constant of proportionality (k) and related word problems.
Practice Question
1

Find the equation of direct variation, given that y varies directly with x.

y is 15 when x is 10

 
Possible Answers
Your Answer
Correct Answer
A)

y = (3/2)x
B)

y = (2/3)x
C)

y = 2x
D)

y = 3x
Practice Question
2

Find the equation of direct variation, given that y varies directly with x.

y is 12 when x is 3

 
Possible Answers
Your Answer
Correct Answer
A)

y = (1/2)x
B)

y = (2/3)x
C)

y = 2x
D)

y = 4x
Other Resources
View all concepts
Smartest Way to Practice Math
TenMarks is the smartest way to practice and learn math online. Experience our interactive worksheets that engage students.
Personalized program, mapped to state standards
Interactive worksheets with hints and video lessons
Rewards and certificates motivate students
Only $10 a month
TenMarks - Experience