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Class 9-10, JEE & NEET
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Explain the concept of direct variation.
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 and vice - versa. Similarly, if we decrease the value of one variable, the value of other variable also decreases and vice - versa.
Therefore, if the ratio between two variables remains constant, it is said to be in direct variation.