TS EAMCET · Maths · Straight Lines
If the lines \(x+y-1=0, k x+2 y+1=0\) and \(4 x+2 k y+7\) \(=0\) are concurrent, then \(k=\)
- A 2
- B \(\frac{13}{2}\)
- C \(\frac{-13}{2}\)
- D \(-2\)
Answer & Solution
Correct Answer
(C) \(\frac{-13}{2}\)
Step-by-step Solution
Detailed explanation
\(\left|\begin{array}{ccc}1 & 1 & -1 \\ k & 2 & 1 \\ 4 & 2 k & 7\end{array}\right|=0\)…
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