Mathematics · Linear Equations
Let k be a constant. The system of linear equations kx + y = 3 and 4x + ky = 4 has a unique solution if and only if:
- 1k = 2
- 2k ≠ 2
- 3|k| = 2
- 4|k| ≠ 2✓
Correct answer
|k| ≠ 2
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