To write the equation of the line \( y = mx \) that describes a proportional relationship through the origin, you need the value of the slope \( m \).
The equation, in its simplest form, indicates that \( y \) is directly proportional to \( x \), meaning as \( x \) increases, \( y \) also increases at a constant rate characterized by the slope \( m \).
However, since no specific values or graph data points have been provided, I'm unable to determine the exact slope \( m \) for your case. If you can supply the slope or the coordinates of points on the line, I can help you find the complete equation.
In general, the equation will look like this:
\[ y = mx \]
Where \( m \) is the slope determined from the data or graph provided.