If the point (x, y) is dilated around the origin by a scale factor m, then its image is
(mx, my)
That means multiplying each coordinate by the scale factor of the point to get its image
Since the scale factor of dilation is 2
Since S = (-3, 3), then
S' = (-6, 6)
Since U = (-1, 4), then
U' = (-2, 8)
Since N = (-2, -1), then
N' = (-4, -2)