To solve for the constant of proportionality (k) in the scenario where the weight of the pet ferret varies directly with its length, we can use the equation:
\[ y = kx \]
where:
- \( y \) is the weight of the ferret,
- \( x \) is the length of the ferret, and
- \( k \) is the constant of proportionality.
To find \( k \), you would typically need a specific pair of values for \( y \) (weight) and \( x \) (length). The constant \( k \) can be determined by rearranging the equation:
\[ k = \frac{y}{x} \]
If you provide specific values for the weight and length from the table, I can help you calculate the constant of proportionality and the complete equation.