Find the constant k in y = kx from x,y pairs.
Last updated: June 2026 | By Patchworkr Team
Enter one x,y pair per line. Blank lines and malformed rows are rejected.
Average k
3
Proportional?
Yes
Ratios
In a proportional relationship, the ratio y/x stays constant for every valid pair.
What if x is zero?
The calculator rejects that pair because y/x would be undefined.
Do the ratios need to match exactly?
For a proportional relationship, yes. This calculator uses a small tolerance for floating-point noise.
Can I use decimals?
Yes. Decimal and scientific-notation inputs are accepted.
What if a row is malformed?
Malformed rows are rejected instead of being silently ignored.