Answer:
The southern asia are includes Afghanistan, India, Pakistan, Bangladesh, Sri Lanka, Nepal, Bhutan and Maldives as the constituent countries.
hope this helps as the south of asia is hard to describe, that is why I included a map.
Step-by-step explanation:
27:9 which simplifies to 3:1
a to b: 8
b to c: -4
c to d: -27.59
Average rate of change just means slope!
I used y2-y1/x2-x1