For which value of \(k\), lines \(x+2y=9\) and \(kx+4y=-5\) are parallel?
Question and options
For which value of , lines and are parallel?
- 2
- 5
- 3
- 1
Answer and explanation
Correct answer: A - 2
Slopes: -1/2 and -k/4. Parallel when k/4 = 1/2, so k = 2 (intercepts 9/2 vs -5/4 differ, so lines are distinct).
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