The equation \( y = 7x \) describes a direct variation relationship where \( y \) is the total number of weeks it takes to complete \( x \) road projects. In this equation, the constant of proportionality is 7.
This means that for each additional road project (increasing \( x \) by 1), it takes an additional 7 weeks to complete that project.
Thus, in this context, the correct interpretation is:
7 it takes the crew 7 weeks to complete 1 project.
This suggests that the crew requires 7 weeks for each individual road project they work on.