Some one help me with me my math

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?