Answer:
-12
Step-by-step explanation:
I try to think of it as how many steps would I need to get to zero
-12 would take 12 steps to get to 0
7 would take 7 steps to get to 0
-9 would take 9 steps to get to 0
1 would take 1 step to get to 0
-12 would take the most steps to get to 0 so it is the farthest from 0 on the number line
