Straight Line Question 385

Question: If $ a+b+c=0 $ and $ p\ne 0, $ the lines $ ax+(b+c)y=p, $ $ bx+(c+a)y=p $ and $ cx+(a+b)y=p $

Options:

A)Do not intersect

B)Intersect.

C)Are concurrent.

D)None of these

Show Answer

Answer:

Correct Answer: A

Solution:

  • By the help of given condition of $ a+b+c=0 $ , the three lines reduce to $ x-y=\frac{p}{a} $ , $ x-y=\frac{p}{b} $ , or $ x-y=\frac{p}{c} $ ( $ p\ne 0 $ ). All these lines are parallel. Hence they do not intersect in finite plane.



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