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TS EAMCET · Maths · Straight Lines

The lines \(x+y+4=0, x-2 y-4=0\) and \(3 x+4 y-2=0\)

  1. A are concurrent
  2. B form an isosceles triangle
  3. C form a right-angled triangle
  4. D form a scalene triangle
Verified Solution

Answer & Solution

Correct Answer

(D) form a scalene triangle

Step-by-step Solution

Detailed explanation

\(x+y+4=0\) and \(x-2y-4=0 \Rightarrow x=2y+4\) \((2y+4)+y+4=0 \Rightarrow 3y+8=0 \Rightarrow y=-8/3\) \(x=2(-8/3)+4 = -16/3+12/3 = -4/3\). Vertex 1: \(P_1(-4/3, -8/3)\) \(x+y+4=0\) and \(3x+4y-2=0 \Rightarrow y=-x-4\)…