It's another term for hurricane
The Mekong River flows through the countries China, Myanmar, Thailand, Laos, Cambodia, and Viet Nam.
Its a cinder cone cause after it all falls down to make deposits.
Well to start off on a graph the x goes left and right and the y goes up and down. you always read coordinates (x,y), so -4 needs to go left and make -6 and the 2 needs to go up making 4 so your new coordinates are (-6,4)