Question

What is the opposite of 12.75 on a number line

Answer 1

It would be -12.75 because it is the opposite of 12.75

Answer 2

12.75 on a number line is to your right.

Or another way to write it:

+12.75.

The opposite?

Move it the same distance to the left of 0: or, move 12.75 to the left of 0 instead.

-12.75 instead of +12.75