Q. $The\ determinant\ \left| \begin{matrix} x & y & 1 \\ x_{1} & y_{1} & 1 \\ x_{2} & y_{2} & 1 \end{matrix} \right| = 0\ represents$
A) A pair of straight lines
B) A straight line
C) A circle
D) None of these
Explanation
The correct answer is Option B: A straight line.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.