constant of variation
a constant ratio in a direct variation
The constant of variation is a value that determines the relationship between two variables in a direct or inverse variation. In a direct variation, the constant of variation (k) is the ratio of two directly proportional variables (y and x) such that y = kx. This means that y increases or decreases proportionally as x increases or decreases. In an inverse variation, the constant of variation (k) is the product of two inversely proportional variables (y and x) such that y = k/x. This means that as x increases, y decreases, and vice versa. The constant of variation is a key concept in mathematics that helps in solving various problems involving proportional relationships.
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