which numbers are four units from -1?

3, -5 are both four units away on the real number line.Donna E. Shalala

To find numbers that are four units away from -1 on the real number line, we need to add and subtract 4 from -1.

Adding 4 to -1:
-1 + 4 = 3

Subtracting 4 from -1:
-1 - 4 = -5

Therefore, the numbers 3 and -5 are both four units away from -1 on the real number line.