Which of the following equations describes a relationship of inverse variation between input and output?
a.) output=constant/input
b.) output=constant–input
c.) output=constant •input
d.) output=input/constant

The correct answer would be A. The correct relationship when the variation of the input and output is inverse would be Output=Constant/Input. We can see that as input increase, the output would increase accordingly. The variation would be the same when one variable is decreased.