Please answer 4-6

D Question 4 10 pts Solve the system -x - zy = 12 by substitution. State whether the system is independent, y = 1 consistent, or inconsistent. Type your answer as an ordered pair. Do not space. Solution: The system is D Question 5 10 pts Is the point (-1, 5, 2) a solution to the system 2x + y - z = 1 x - 2y +2 - 9 x - y - 2x - -8 Yes No answer text provided. No answer text provided. O No D Question 6 10 pts Is the point (-3, -4) a solution to the nonlinear system z? + y = 25 ? 21 - 3y = 18 No Yes