rotation 90° counterclockwise about the origin

What are the coordinates of F' (the image of F).
A. (1, 4)
B. (4, 1)
C. (-4, -1)
D. (-1, -4)

rotation 90 counterclockwise about the origin What are the coordinates of F the image of F A 1 4 B 4 1 C 4 1 D 1 4 class=

Respuesta :

Draw a line from F to (0,0). If you rotate that line 90 degree counterclockwise about the origin, the coordinate of F’ will be (4,1)
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