Alg. 1: Direct Variation

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Boycekelsey
B
Boycekelsey
Community Contributor
Quizzes Created: 1 | Total Attempts: 1,797
| Attempts: 1,797
Quiz Flashcard
SettingsSettings
Please wait...
  • 1/5 Questions

    If y = 15 when x = 2, y = 10 when x = 8.

    • True
    • False
Please wait...
Alg. 1: Direct Variation - Quiz
About This Quiz

Algebra 1, Direct Variation quiz.
If x=a and y=b find y/x if x/y=c
Word Problems
Write Equations
Formula: y=kx

Quiz Preview

  • 2. 

    y is directly proportional to x. If y = 16 when x = 4, write the formula for the relation between y and x.Hint: y=kx

    Explanation
    The given question states that y is directly proportional to x. This means that as x increases, y also increases in a linear manner. The formula for this relationship is y = kx, where k is the constant of proportionality. In this case, we are given that y = 16 when x = 4. By substituting these values into the formula, we can solve for k. Therefore, the formula for the relation between y and x is y = 4x.

    Rate this question:

  • 3. 

    Write an equation for the direct variation. Do not solve.If y = 20 when x = 4, find y when x = 9Hint: y=kx

    Explanation
    The equation y=5x represents a direct variation because it follows the form y=kx, where k is a constant. In this case, the constant is 5, which means that for every increase in x by 1, y will increase by 5. Therefore, when x=9, y can be found by substituting the value into the equation: y=5(9)=45.

    Rate this question:

  • 4. 

    The amount of money raised at a charity fundraiser is directly proportional to the number of attendees.  The amount of money raised for five attendees was $100.  How much money will  be raised for 60 attendees?Hint: $x,xxx

    Explanation
    The given information states that the amount of money raised at a charity fundraiser is directly proportional to the number of attendees. This means that as the number of attendees increases, the amount of money raised will also increase in proportion. The question provides the amount of money raised for five attendees, which is $100. To find out how much money will be raised for 60 attendees, we can set up a proportion: 5 attendees correspond to $100, so 60 attendees will correspond to x amount of money. Solving this proportion, we find that x = $1,200. Therefore, $1,200 will be raised for 60 attendees.

    Rate this question:

  • 5. 

    Write an equation for the direct variation. Do not solve.If x=3 when y=4, find y when x=24Hint: y=kx

    Explanation
    The equation y=4/3x represents a direct variation because it follows the form y=kx, where k is the constant of variation. In this case, the constant of variation is 4/3, which means that for every increase in x by 1, y will increase by 4/3. Therefore, if x=24, we can substitute it into the equation to find y.

    Rate this question:

Quiz Review Timeline (Updated): Mar 20, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 20, 2010
    Quiz Created by
    Boycekelsey
Back to Top Back to top
Advertisement