Question

Which of the following statements best describes the location of −(−2) on a number line? It is 2 units to the right of 0. It is 2 units to the left of 0. It is 2 units to the right of 2. It is 2 units to the left of 2.

Answer 1

Let say x = -(-2) where x is the distance of number on number line from 0.
x = -(-2) 
x = +2.
Since +2 is positive quantity, positive quantities are written to the right of 0 on number line.
Hence it is 2 units to the right of 0.