# variation

Variation and proportion are defined to be the relationship between two or more variables with regard to a constant of proportionality.

The traditional notation for direct proportionality is $x\propto y$ or, if using regular equality notation, $x=ky$.

Here, $k$ denotes the constant of proportionality.

Similarly, the traditional notation for inverse proportionality is $x\propto 1/y$ or, with regular equality, $x=k/y$.

For direct proportionality, to find the value of an unknown $x$ or $y$, you may use the formula: $y_{1}/x_{1}=y_{2}/x_{2}$

Similarly, for inverse proportion it would be: $x_{1}/y_{1}=y_{2}/x_{2}$

Title variation Variation 2013-03-22 14:53:49 2013-03-22 14:53:49 drini (3) drini (3) 7 drini (3) Topic msc 08C99 Proportion HomogeneousEquation GraphOfEquationXyConstant ProportionalityOfNumbers Relationships between two or more variables.