Straight Line Question 352

Question: The equation of the straight line joining the origin to the point of intersection of $ y-x+7=0 $ and $ y+2x-2=0 $ is [MP PET 2001]

Options:

A) $ 3x+4y=0 $

B) $ 3x-4y=0 $

C) $ 4x-3y=0 $

D) $ 4x+3y=0 $

Show Answer

Answer:

Correct Answer: D

Solution:

  • The intersection point of $ y-x+7=0 $ and $ y+2x-2=0 $ is $ (3,-4) $ \ Equation of straight line joining origin to $ (3,-4) $ is $ y-0=\frac{-4}{3}(x-0) $
    Þ $ 4x+3y=0 $ .