If 4x+y=34, 2x-y=20, for integers of x and y, y^2=?  Answers: A) 2 B) 4 C) 0 D) 10 E) 3

Rationale: 4 x + y = 34 2 x - y = 20 6 x = 54 x = 9 y = - 2 y ^ 2 = 4 answer is b
Answer: B