Direct Variation
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
Student preview
15 questions
Show all answers
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
If y varies directly with x, what does that mean?
Back
It means that as x increases or decreases, y changes in a proportional manner. The ratio y/x remains constant.
3.
FLASHCARD QUESTION
Front
What is the constant of proportionality in direct variation?
Back
The constant of proportionality (k) is the constant factor that relates the two variables in a direct variation equation, expressed as y = kx.
4.
FLASHCARD QUESTION
Front
If y = 39 when x = 3, what is the constant of proportionality?
Back
k = y/x = 39/3 = 13.
5.
FLASHCARD QUESTION
Front
If y = 2 when x = 6, what is the value of y when x = 12?
Back
y = kx; k = 2/6 = 1/3; y = (1/3) * 12 = 4.
6.
FLASHCARD QUESTION
Front
If y = 20 when x = 5, what is the value of y when x = 10?
Back
k = 20/5 = 4; y = 4 * 10 = 40.
7.
FLASHCARD QUESTION
Front
How do you find y when x is given in a direct variation problem?
Back
Use the formula y = kx, where k is the constant of proportionality.
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports
Continue with Google
Continue with Email
Continue with Microsoft
or continue with
%20(1).png)
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?
