Direct
The output is three times as large.
A study of inverse relationships is one of a very large number of uses for rational functions. Only a rational function of a very special kind will be of any use.
It is true that if when x is getting larger, y is getting smaller, that would be an inverse relationship.
No, this is an inverse variation.
The output is doubled.
Direct
The output is tripled.
the output is divided by 3.
The output is multiplied by 5.
The output is multiplied by 5.
The output is multiplied by 3.
the output is halved
The output is three times as large.
The inverse variation is the indirect relationship between two variables. The form of the inverse variation is xy = k where k is any real constant.
the output is divided by 3.
If a variable X is in inverse variation with a variable Y, then it is in direct variation with the variable (1/Y).