Respuesta :
Answer:
any leter in math is the unknown so you're looking for the unknown and the unknown is -1 so x and y is the unknown and the unknown is -1 because the center is (-1 and -1)
( -1 + 1 = 1 ) ( 1 + 2 = 3 ) ( 3 + -1 = 2 ) ( 2 = 2 ) A. is equil to 2
( -1 - 1 = -2 ) ( -2 + 2 + 0 ) ( 0 + -1 = -1 ) ( -1 = -1 ) B. is equil to 1
( -1 + 1 = 1 ) ( 1 + 2 =3 ) ( 3 + -1 = 2 ) ( 2 = 2 ) C. is equil to 2
so the answer is B. which is equil to -1