The correct equation for the line of best fit shown in the scatterplot is:

B) $y = 2.5 + 0.5x$.

Would you like more details or have any questions?

Here are 5 related questions:

1. How do you find the slope of a line of best fit from a scatterplot?
2. What does the slope in a line of best fit represent in real-life data?
3. How can you determine the y-intercept from a graph?
4. How would the equation change if the slope were negative?
5. What is the purpose of a line of best fit in statistics?

Tip: The slope of the line indicates how much the dependent variable (y) changes for each unit increase in the independent variable (x).