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प्रश्न
Explain the concept of direct variation.
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उत्तर
\[\text{ When two variables are connected to each other in such a way that if we increase the value of one variable, the value of other variable also increases } \]
\[\text{ and vice - versa . Similarly, if we decrease the value of one variable, the value of other variable also decreases and vice - versa .} \]
\[\text{ Therefore, if the ratio between two variables remains constant, it is said to be in direct variation } .\]
संबंधित प्रश्न
Complite the following table given that x varies directly as y .
| x | 4 | 9 | ... | ... | 3 | ... |
| y | 16 | ... | 48 | 36 | ... | 4 |
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