Answer:
(6, -4)
Step-by-step explanation
Note that when rotating an image 90° clockwise, the coordinate (x, y) will be (y, -x)
Given the coordinate (4, -6) when roatated 90° clockwise, the resulting coordinate will be at (-6, -4)
Reflecting (x, y) over the y-axis will result in the coordinate (-x, y)
Reflecting (-6, -4) over y axis will give (-(-6), -4) = (6. -4)
Hence the required coordinate will be (6, -4)