>>775
y = 2x^2

x = -4 のとき y = 2(-4)^2 = 2*4^2 = 32
x = -3 のとき y = 2(-3)^2 = 2*3^2 = 18
x = -2 のとき y = 2(-2)^2 = 2*2^2 = 8
x = -1 のとき y = 2(-1)^2 = 2*1^2 = 2