Here's the question you clicked on:
stupidinmath

Assuming right is east and left is west?
The bus stop seems to be 1 km to the right of the school, so let's say the distance is +1 km
Or rather, the location is +1 if you take the school as your point of reference.
The purpose of this question is likely to make your sister familiar with the number line http://2.bp.blogspot.com/CbElRsoqemo/TWlyTwCLFaI/AAAAAAAAApE/cL3GuhCvY8k/s1600/numberline.png
The church seems to be at 3 for example