Pair Of Straight Lines Question 25

Question: The equation of one of the line represented by the equation $ pq(x^{2}-y^{2})+(p^{2}-q^{2})xy=0 $ , is

Options:

A) $ px+qy=0 $

B) $ px-qy=0 $

C) $ p^{2}x+q^{2}y=0 $

D) $ q^{2}x-p^{2}y=0 $

Show Answer

Answer:

Correct Answer: A

Solution:

Equation of lines are $ (px+qy)(py-qx)=0 $ . Hence, one line is $ px+qy=0 $ .