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# Does the equation represent a direct variation? If so, find the constant of variation: 5x = 3y.

Proportionality is an important concept which has many day-to-day uses. Various quantities can be compared using proportionality. For example, volume is inversely proportional to density.

## Answer: The equation represents a direct variation, and the constant of variation for 5x = 3y is k = 5 / 3.

Let's understand the solution in detail.

**Explanation:**

Given: 5x = 3y

We can rearrange it as y = 5x / 3

Hence, we see that y ∝ x, and the equation is of the form y = kx, where k is the proportionality constant. This denotes that y varies directly with x.

Here k = 5 / 3.

### Hence, the equation represents a direct variation, and the constant of variation is k = 5 / 3.

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