Added a nice link below.
I don't know, which way is the Indo-Australia plate moving?
north west
they are moving south and west at the same time
I believe it is moving north, which creates the mountains as it pushes up against the asian plate.
Cocos Plate is moving towards the north-east.
Cocos Plate is moving towards the north-east.
The typical speed of a moving plate is about 21mm a year.
The Nazca plate is moving southeast towards the South American plate, which is less dense, therefore causing the Nazca plate to be driven under the South American plate at about 77mm per year. The collision of these plates is responsible for lifting the massive Andes Mountains and causing the volcanoes which are strewn throughout them.
So the direction and speed of plate motion is measured with the assumption that the Africa plate is stationary. Using this standard North and South America is moving west away from Africa.
The Pacific and Cocos plate.
northwest they are moving
The South American Plate.