Hi

I am stuck with a sheet I got from school and i dont understand what the question means. Ive attached a picture of the street/houses and hope one of you guys could figure out the answer to the last 2 questions

1. Find a Rule for the numbers of two houses if one house is due south of the other house

2. Find a rule for the numbers of two houses if one house is due north-west of the other house.

Any Ideas ?

Help Needed

Thanks