Direct Variation
Solve direct variation problems by finding the constant of variation k = y/x and computing new y values. Free online algebra tool for students.
About This Calculator
The Direct Variation Calculator solves proportional relationship problems using the equation y = kx. Enter a known (x, y) pair to find the constant of variation k, then enter a new x value to compute the corresponding y. This tool is essential for algebra students studying proportional relationships.
Frequently Asked Questions
What is direct variation?
Direct variation describes a proportional relationship where y = kx, with k being the constant of variation.
How do you find the constant of variation?
Given a known pair (x, y), the constant k = y/x.
How do you find y for a new x in direct variation?
Once you know k, multiply it by the new x: y = k x newX.
What is the difference between direct and inverse variation?
In direct variation (y = kx), y increases when x increases. In inverse variation (y = k/x), y decreases when x increases.
Is this calculator free?
Yes, all calculators on Calculy are completely free to use.