Answer:
One tick mark to the left of -5 is where -6 would go. Another way to think of it, is to start at zero and count 6 tick marks to the left. That is where -6 would go.
You can start at zero and go 9 tick marks to the left and that would be -9. Another way to think about it, is to put -9 one tick mark to the right of -10
Explanation: