AP EAMCET · Maths · Pair of Lines
The quadrilateral formed by the pairs of line \(x y+x+y+1=0, x y+3 x+3 y+9=0\) is
- A Parallelogram
- B Rhombus
- C Rectangle
- D Square
Answer & Solution
Correct Answer
(D) Square
Step-by-step Solution
Detailed explanation
Given pair of lines \[ \begin{array}{rlrl} x y+x+y+1 & =0 \\ x(y+1)+(y+1) & =0 \\ & & (y+1)(x+1) & =0 \\ \Rightarrow \quad & \quad x & =-1 \text { or } y=-1 \end{array} \] and second pair of line…
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