Answer: Not enough information.
Step-by-step explanation: To find the value of point B on a number line, you need to figure out where it is. Each point on the line represents a value, with bigger values to the right and smaller ones to the left, assuming zero is on the left. You can find B's value by counting the units from zero to B, or by comparing it to the values of A and C. If you know the values of A and C and where B is between them, you can find B's value.