Use the accompanying figure to write each vector listed as a linear combination of u and v. Vectors a, d, x, and y Write a as a linear combination of u and v. a = (1)u + (-2)v (Type integers or decimals.) Write d as a linear combination of u and v. d = (3)u + (-4)v (Type integers or decimals.) Write x as a linear combination of u and v. x = (-2)u + (2)v (Type integers or decimals.) Write y as a linear combination of u and v. y = (-2)u + (3.5)v (Type integers or decimals.)