Algebra & Equations
Direct Variation
y varies directly with x: find y.
Formula
Formula
y = k·x
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| k | constant of variation | real number (ℝ) | — | input |
| x | input | real number (ℝ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenk = 3, x = 7
Result21
Example 2
Givenk = 0.5, x = 20
Result10