Answer:
Explanation:
To determine if a, b, c, or d is a direct or partial variation, we need more information. Direct variation occurs when two variables change proportionally. In other words, if one variable increases, the other also increases by the same factor, and vice versa.
For example, if we have the equation y = kx, where k is a constant, this represents a direct variation. As x increases, y also increases, and the ratio between y and x remains constant.
On the other hand, partial variation occurs when two variables are related, but not in a direct proportional way. The relationship between the variables may involve addition or subtraction, rather than just multiplication or division.
To determine if a, b, c, or d is a direct or partial variation, we would need to see the equations or information given for each variable. Without that information, we cannot determine the type of variation.