The problem asks whether the equation $y = 0.28x$ represents a proportional relationship.

1. Problem Description

The problem asks whether the equation $y = 0.28x$ represents a proportional relationship.

2. Solution Steps

A proportional relationship can be expressed in the form:

$y = kx$, where $k$ is the constant of proportionality.

In the given equation $y = 0.28x$, we can see that it matches the form $y = kx$ where $k = 0.28$. Also, when $x = 0$, $y = 0.28(0) = 0$. This means the line passes through the origin (0, 0), which is a characteristic of proportional relationships.

Therefore, the equation represents a proportional relationship.

3. Final Answer

Proportional