I think the answer would be be C.
From the graph given, the coordinates of point F are:
(x, y) ==> (-5, -3)
Using rotation rules, after a 90° clockwise rotation about the origin, (x, y) becomes (y, -x)
Thus, after a 90° clockwise rotation, we have:
(x, y) ==> (y, -x)
(-5, -3) ==> (-3, 5)
Therefore, 90° clockwise rotation about the orign, the coordinate
Answer:
-1
Step-by-step explanation:

(x₁, y₁) is the first coordinate and (x₂, y₂) is the second coordinate.
Slope of the line



= -1