Final answer:
The numerical expression represented by the number line is 9 - 13.
Step-by-step explanation:
The numerical expression represented by the number line shown is d. 9 - 13.
We can determine this by looking at the position of the numbers on the number line. The number line starts at -10 and goes up to 10, with the number 4 located in the middle. Since the number 4 is closer to the negative numbers, we know that the expression will involve a subtraction.
By subtracting a larger number (13) from a smaller number (9), we get a negative result that is to the left of 4 on the number line. Therefore, the correct choice is d. 9 - 13.