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MMLU / Consider the system of linear equations

Problem

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question

Consider the system of linear equations
w + 3x + 2y + 2z = 0
w + 4x + y = 0
3w + 5x + 10 y + 14z = 0
2w + 5x + 5y + 6z = 0
with solutions of the form (w, x, y, z), where w x, y, and z are real. Which of the following statements is FALSE?

choices

  1. The system is consistent.
  2. The system has infinitely many solutions.
  3. The sum of any two solutions is a solution.
  4. Every solution is a scalar multiple of (-5, 1, 1, 0).

subject

college_mathematics

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