The equation \( y = 4x \) represents a linear relationship where \( y \) (the total revenue from ticket sales) is directly proportional to \( x \) (the number of tickets sold). In this equation:
- The coefficient of \( x \) (which is 4) represents the slope of the line.
- This means for every additional ticket sold, the revenue increases by $4.
Answer:
The slope of the line is 4.
To select the correct graph:
- Look for a graph where the line passes through the origin (0,0).
- The line should incline upward, and for every 1 unit increase in \( x \), \( y \) should increase by 4 units.
If you have specific graphs to choose from, select the one that fits this description.