Hey there! I'm happy to help!
There is going to be a number 3 units to the right and 3 units to the left. If we go to the right, we add.
-1+3=2
And if we go to the left, we subtract.
-1-3=-4
So, the numbers that are more than 3 units from -1 on a number line is any number greater than 2 or less than -4.
Have a wonderful day! :D
