Answer:
R(x.y) (x, y ) → (- y, x )
simply as when quadrant 1 is shown (top right grid) x,y is positive.
Counterclockwise from quadrant 2 = negative y (top left grid is counterclockwise)
If quadrant 1 is shown first and it said counterclockwise 180 then it would be diagonally across the grid and show quadrant 3 = negative x, negative y
Step-by-step explanation:
