On which number line are -6 and its opposite shown?
O a
Ob
Oc
Od
HHHH
-10-9-8-7 -6 -5 -4 -3 -2 -1 01
<+
|||||
2 3 4 567
<|||||||||||
+111
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 567 8 9 10
8 9 10
<||||| ||||||||||||||||
-10 9 8 7 6 5 4 3 2 -1 0 1 2 3 4 5
<||||$||$|||||||
-10-9-8-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
6 7 89 10
56
Đ
7 8 9 10