How Do You Use the Formula for Direct Variation?

How Do You Use the Formula for Direct Variation?

Note:

If two things are directly proportional, you can bet that you'll need to use the formula for direct variation to solve! In this tutorial, you'll see how to use the formula for direct variation to find the constant of variation and then solve for your answer.

Keywords:

  • problem
  • direct variation
  • variation
  • direct
  • directly proportional
  • proportional
  • constant of variation
  • find constant of variation
  • evaluate
  • apply proportion

Background Tutorials

  • Direct Variation Definitions

      • What's the Direct Variation or Direct Proportionality Formula?What's the Direct Variation or Direct Proportionality Formula?

      What's the Direct Variation or Direct Proportionality Formula?

      Ever heard of two things being directly proportional? Well, a good example is speed and distance. The bigger your speed, the farther you'll go over a given time period. So as one variable goes up, the other goes up too, and that's the idea of direct proportionality. But you can express direct proportionality using equations, and that's an important thing to do in algebra. See how to do that in the tutorial!

  • Evaluating Expressions

      • What is a Variable?What is a Variable?

      What is a Variable?

      You can't do algebra without working with variables, but variables can be confusing. If you've ever wondered what variables are, then this tutorial is for you!

  • Simplifying Expressions

      • What is a Constant?What is a Constant?

      What is a Constant?

      Constants are parts of algebraic expressions that don't change. Check out this tutorial to see exactly what a constant looks like and why it doesn't change.

Further Exploration