Answer:
rotation of 270°
Step-by-step explanation:
Consider the coordinates of of preimage and image of ABC
A(1, 0 ) → A'*0, - 1 )
B(6, - 7 ) → B'(- 7, - 6 )
C(0, - 4 ) C'(- 4, 0 )
What we note is the x- coordinate of the image is the y- coordinate of the preimage and the y- coordinate of the image is the negative of the x- coordinate of the preimage, that is
(x, y ) → (y, - x )
This is equivalent to a counterclockwise rotation about the origin of 270°
