Multiple choice. choose the one alternative that best completes the statement or answer the question, solve the stem of equations. 1) x1 + x2 + x3 - 6 x1 - x3 = -2 *2.3x3 - 11 a) (-1, 2, -3) b) (0,1,2) c) no solution d) (1,2,3) determine whether the system is consistent. 2) x1 - x2 + 4x3 =15 -4x1 +4x2 - 16x3 = 4 x1 +4x2+x3 = 0 a) no b) yes determine whether the matrix is in echelon form, reduced echelon form, or neither. [1 0 -3 -5 3) 0 1 -3 4 0 0 0 0 lo 0 0 0 b) echelon form c) reduced echelon form a) neither 1 -5 3 47 4) 0 0 -5 -4 "lo 0 0 -2 lo o o od c) echelon form a) reduced echelon form b) neither the augmented matrix is given for a system of equations. if the system is consistent, find the general solution. therwise state that there is no solution. [ 1 2 -3 51 5) 0 1 4 -5 loo 0 0] b) x1 = 15 + 11x3 a) x1 =15+11x3 x2 =-5 - 4x3 x2 =-5 - 4x3 x3 is free x3=0 d) x1=5 - 2x2 +3x3 c) x1 = 5-2x2 + 3x3 x2=-5 - 4x3 x2 is free xz is free *3 is free