proporcionális
Proporcionális is a term used in several contexts, primarily relating to proportionality or a relationship where quantities change at a constant rate with respect to each other. In mathematics, a direct proportion exists between two variables when their ratio is constant. This means if one variable doubles, the other also doubles, and vice versa. This relationship can be expressed as y = kx, where k is the constant of proportionality. An inverse proportion, on the other hand, describes a relationship where the product of the two variables is constant. If one variable increases, the other decreases proportionally, such that their product remains unchanged. This is represented by xy = k.
The concept of proportionality extends beyond pure mathematics. In politics, proportional representation is a voting system