How do i solve this ?

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a.r'(–3, 1),  s'(–3, 5)b.r'(–1, 3),  s'(–5, 3)c.r'(1, 3),  s'(5, 3)d.r'(5, 3),  s'(1, 3)

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

How can you tell when x and y are not directly proportional?