Inverse Variation

 

Inverse variation can be termed as indirect variation also.

For example: the number of days required to build a temple varies inversely to the number of workers. As the number of workers increases, the number of days required to build would decrease.

In general, when two variables x and y are such that 

xy = k where k is a non-zero constant, we say that varies inversely with x

We can also express the relationship between x and y as:

Y = k/x

Example:

If y varies inversely as x, and y = 6 when x =, write an equation describing this inverse variation.
k = (6) = 8
xy = 8 or y =