It seems you've uploaded an image containing multiple mathematical questions. Based on your query, you're asking for help with the equation 2x + y = 7, which is part of the context.

Would you like me to:

1. Solve 2x + y = 7 for a specific variable?
2. Provide additional information or steps related to solving this equation for particular scenarios?
3. Solve a related part of the uploaded image's questions?

Please confirm or let me know if you'd like the other parts of the image analyzed as well!

Here are some potential follow-ups:

1. How to solve linear equations with two variables?
2. How to graph the equation 2x + y = 7?
3. What is the general solution for a single linear equation like this?
4. How to convert this equation into slope-intercept form?
5. How to apply elimination or substitution for solving systems involving 2x + y = 7?

Tip: Linear equations can be easily visualized on a graph to better understand their solutions!