Which number line correctly represents -5+ (-1)?

Answer:
Number Line 4
Step-by-step explanation:
The number line should represent -5, meaning it should move from the starting point, 0 to the number -5.
This is represented by both Number Line 2 and Number Line 4.
Now, an additional piece of information has also been given. We need to add (-1) to this existing number line. This means it should move 1 space to the left (towards the negative direction).
Hence, the correct representation of -5 + (-1) on a number line is Number Line 4.