ExamBro
ExamBro
TS EAMCET · Maths · Straight Lines

Two straight lines \(3 x+4 y=5\) and \(4 x-3 y=15\) intersect at the point \(A\). The equations of the lines passing through \((1,2)\) and intersecting the given lines at \(B\) and \(C\) such that \(A B=A C\) are

  1. A \(x+4 y=9,4 x-y=2\)
  2. B \(9 x-2 y=5,2 x+9 y=20\)
  3. C \(6 x-y=4, x+6 y=13\)
  4. D \(7 x+y=9, x-7 y+13=0\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(7 x+y=9, x-7 y+13=0\)

Step-by-step Solution

Detailed explanation

Given line \(3 x+4 y=5 \text { and } 4 x-3 y=15\) Slope of line \(3 x+4 y=5\) is i.e., \(m_1=\frac{-3}{4}\) Slope of line \(4 x-3 y=15\) i.e., \(m_2=\frac{4}{3}\) Let the slope of line \(B C=m\) Given, \(A B=A C\) \(\because \quad \tan \alpha=\tan \beta\)…