Final answer:
To find x - y with x = -2 and y = 1, subtract y from x, which gives -2 - 1 = -3. The value of x - y on the number line is at -3.
Step-by-step explanation:
The question is asking to find the value of x - y given two points on the number line: X at -2 and Y at 1. To find this, we simply subtract the value of Y from X. Thus, the calculation would be -2 - 1 = -3.
So, the location of x - y on the number line would be at -3.