Answer:
-8
Explanation:
A number line has negative numbers on the left and positive on the right
5 units to the right of 3 would be 3+5 which would equal 8
The opposite of a number is another number that is the same distance from zero
In this case, the opposite of 8 would be -8 because 8 is 8 away from zero, and so is -8
Hope this helps...