ExamBro
ExamBro
TS EAMCET · Maths · Straight Lines

Suppose \(A, B\) are two points on \(2 x-y+3=0\) and \(P(1,2)\) is such that \(P A=P B\). Then, the mid-point of \(A B\) is

  1. A \(\left(\frac{-1}{5}, \frac{13}{5}\right)\)
  2. B \(\left(\frac{-7}{5}, \frac{9}{5}\right)\)
  3. C \(\left(\frac{7}{5}, \frac{-9}{5}\right)\)
  4. D \(\left(\frac{-7}{5}, \frac{-9}{5}\right)\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\left(\frac{-1}{5}, \frac{13}{5}\right)\)

Step-by-step Solution

Detailed explanation

Therefore its slope is \(\left(-\frac{1}{2}\right)\). \(\therefore\) Equation of line \(P M\) is \( y-2=-\frac{1}{2}(x-1) \) On solving Eqs. (i) and (ii), we get the mid-point of \(A B\) is \(M\left(-\frac{1}{5}, \frac{13}{5}\right)\).