Direct Variation

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Taught by MrLovellFord
  • Currently 4.0/5 Stars.
8790 views | 1 rating
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Lesson Summary:

In this lesson, we learn about direct variation and its applications in real life scenarios, such as filling a bathtub or diving into a pool. We are shown how to find the constant of variation and use it to solve for unknown quantities. Additionally, we are introduced to using equivalent ratios and cross products as an alternative method to find the solution.

Lesson Description:

Taking a direct variation relationship and finding new values of unknown quantities based on the k of variation. Other solution method is equivalent ratios and usage of cross products.

Questions answered by this video:
  • What is direct variation?
  • What are some examples of direct variation?
  • What is the equation for basic direct variation?
  • How do you write an equation for direct variation from a word statement?
  • If a tub is being filled up at 1.5 gallons per minute, how long will it take to fill a 45-gallon tub?
  • What is a variation constant and how do you find it?
  • How do you solve a direct variation word problem using equivalent fractions and cross multiplication?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson explains some examples of direct variation, how to write direct variation equations from the scenarios, and finally, how to solve a direct variation problem. The concepts in this lesson are explained very well.