What is the equation of the straight line which passes through the point of intersection of the straight lines x+2y=5 and 3x+7y=17 and is perpendicular to the straight line 3x+4y=10?

NDA 2016 Mathematics question

What is the equation of the straight line which passes through the point of intersection of the straight lines and and is perpendicular to the straight line ?

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

From : , . The line has slope , so

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Question ID VK-028507