Direct and Inverse proportions 8 std CBSE

⇨ Direct and Inverse proportions 8 std CBSE

In this topic we are going to learn about

a) Proportion 

⇨   Direct Proportion

⇨ Inverse Proportion

b) Variation

⇨   Direct Variation

⇨ Inverse Variation

Ratio & Proportion

⇨   Direct Proportion: If the ratio of given quantities is constant then that quantities are in direct proportion.
It means in direct proportion the ratio is always constant.

⇨ Inverse Proportion: In inverse proportion the product of given quantities is equal.


     Variation:
If the value of two quantities depend on each other in the way that a change in one results in a corresponding change in the other,then the two quantities are said to be in variation.

Types of variation:
⇨   Direct Variation: If increase or decrease in one quantity the same result in the other quantity it is called direct variation.

 ⇨ Inverse Variation: If increase  in one quantity then decrease  in the other quantity it is called inverse variation.