Respuesta :

Answer:

When a point (x,y) is rotated about the origin (0,0) counterclockwise by an angle θ, the coordinates of the new point (x′,y′)

Step-by-step explanation:

Answer:

Below

Step-by-step explanation:

When any point say (x,y) is rotated 270 degree counterclockwise then it changes to (y,-x).