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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
Fill in the blank in of the following so as to make the statement true:
Two quantities are said to vary......... with each other if they increase (decrease) together in such a way that the ratio of the corresponding values remains same.
Fill in the blank in of the following so as to make the statement true:
x and y are said to vary directly with each other if for some positive number k ....,...... = k.
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Distance travelled by a bus and time taken are in direct proportion
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Two quantities x and y are said to vary directly with each other if for some rational number k, xy = k.
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