Question

Can someone explain the coordinate notation to me please?

Answer 1

Do you mean like how to write the position of points? like (2,3) or (5,7)
If that's what you mean, then the x-coordinate is written first like 2 or 5 and the y-coordinate is written after the comma like 3 or 7.

Answer 2

i don't know its like something about (x,y)---> (x+a, y+b)

Answer 3

i guess you are translating the coordinate