In order to find the opposite of a number we simply change the sign of the number. Since K is to the left of 0, this means K is a negative number. The opposite of K will be a positive number and will be on right side of the 0 on the number line.
Opposite of a number has only different sign. The magnitude (value) of the number remains the same. This means, the opposite of K will be on equal distance from 0 as is the original number K.
Therefore, opposite of K will be K units to the right of 0.