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प्रश्न
The value of k for which the pair of linear equations 5x + 2y − 7 = 0 and 2x + ky + 1 = 0 don't have a solution is ______.
विकल्प
5
`4/5`
`5/4`
`5/2`
MCQ
रिक्त स्थान भरें
उत्तर
The value of k for which the pair of linear equations 5x + 2y − 7 = 0 and 2x + ky + 1 = 0 don't have a solution is `bbunderline(4/5)`.
Explanation:
Given that,
Pair of linear equations as 5x + 2y − 7 = 0 and 2x + ky + 1 = 0
For no solution,
→ `5/2 = 2/k ≠ (−7)/1`
→ `5/2 = 2/k`
→ k = `4/5`
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