Respuesta :

Answer:

B'(- 4, - 1)

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x , y) → (- y, x), hence

B(- 1, 4 ) → B'(- 4, - 1 )


Answer:

(-3, 0)

Step-by-step explanation:

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