Final answer:
The restriction on x-values for the line to appear between -2 and 3 is that the x-values must be between these two numbers, including -2 and 3 themselves.
Step-by-step explanation:
The restriction on the x-values for the line to appear between -2 and 3 is that the x-values must be between -2 and 3. This means we are looking at all the points on the line where the x-coordinate falls within this interval, which includes -2 and 3 as well as all numbers between them. The correct option is x-values between -2 and 3.