# Direct and inverse proportions

Contents
Two values are said to be in direct proportion when increase in one results in an increase in the other. Similarly, they are said to be in indirect proportion when the increase in one results in a decrease in the other. I this chapter we will learn more about these properties.
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### Direct and inverse proportions

Two values are said to be in direct proportion when increase in one results in a proportional increase in the other. Similarly, they are said to be in indirect proportion when the increase in one results in a proportional decrease in the other. Simply because one quantity increases when another one does, it doesn't mean they are in direct proportion. Dive in to learn more about what conditions are required for quantities to be in direct or inverse proportion and also look at a few examples to see why this concept is useful.