Methods are in the work document above

1a) x = 1/2, y = -3

1b) x = 5, x = 3/2

2a) x = 17/5, y = 6/5 or y = -2, x = -3

2b) x = 5, y = 1 or x = -3, y = -3

2c) (2,3) (-6/5, 19/5)

3a) x = 11/2, y = 3/2 or x = 4, y = -3

3b) x = 4, y = -1/2 or x = 5, y = -1

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