the first and last are correct. The solution to the middle one is (4,5).
Feeling that I slipped up somewhere on these, just want to make sure I came up with the correct answers or not...
x + 2y = - 2
-3x + y = -1
My answer: (0, -1)
2x - 3y = -7
3x + 3y = 27
My answer: (5, 4)
y = -4x + 4
y = -1x - 5
My answer: (3, 8)