AP EAMCET · Maths · Pair of Lines
If \(a x^2-34 x y-5 y^2+2 x+26 y-5=0\) represents a pair of straight lines, then the value of \(a\) is
- A \(7\)
- B \(5\)
- C \(2\)
- D \(13\)
Answer & Solution
Correct Answer
(A) \(7\)
Step-by-step Solution
Detailed explanation
\[ a x^2-34 x y-5 y^2+2 x+26 y-5=0 \] Here, \(\Delta=\left|\begin{array}{ccc}a & -17 & 1 \\ -17 & -5 & 13 \\ 1 & 13 & -5\end{array}\right|=0\)…
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