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Question

The straight lines x+2y-9=0, 3x+5y-5=0 and ax+by-1=0 are concurrent if the straight line 22x-35y-1=0 passes through the point


A

(a,b)

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B

(b,a)

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C

(a, b)

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D

(a, b)

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Solution

The correct option is B

(b,a)


Given lines are concurrent
129|355|=0ab1
35a - 22b + 1 = 0
22b - 35a - 1 = 0
Given equation is 22x - 35y - 1 = 0
By comparison (x,y) = (b,a)
Given line must passes through (b,a)


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