The Direct Variation Calculator provided by Hesapstan works with the relationship y = kx. You can find k, solve for x or y from k, or check whether two points follow the same direct-variation constant.
What this calculator does
The calculator has three modes: find k from x and y, solve a missing x or y value from k, and compare two points.
The core direct-variation equation is y = kx. When calculating k = y / x, x cannot be zero.
Limitations
This calculator uses the direct linear model y = kx. It does not calculate y = mx + b lines, inverse variation, or regression models.
Frequently Asked Questions
What is the direct variation formula?
Direct variation is written as y = kx, where k is the constant of variation.
How do I find k?
If x is not zero, k is found with k = y / x.
How is the point (0,0) handled?
(0,0) is consistent with direct variation, but it does not determine k by itself.
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