Use matrices to solve the given system of linear equations. 7x + 7y - z = 0 2x + 5z = 0 3x + 3y = 0 If there is one solution, give its coordinates in the answer spaces below. If there are infinitely many solutions, enter "z" in the answer blank for z, enter a formula for y in terms of z in the answer blank for y and enter a formula for x in terms of z in the answer blank for X. If there are no solutions, enter "none" in each of the blanks. X = y = z = - y (1 point) Solve the following system of linear equations. 3 x+z = 4 If there is one solution, give its coordinates in the answer spaces below. If there are infinitely many solutions, enter "2" in the answer blank for z, enter a formula for y in terms of z in the answer blank for y and enter a formula for x in terms of z in the answer blank for X. If there are no solutions, enter "none" in each of the blanks. X = y = z = -x + 2y = -y + 2z =