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Question

Unique point is obtained for the pair of equations a1x + b1y + c1 = 0 and a2x +b2y + c2 = 0 if


A

a1/a2 ≠ b1/b2 = c1/c2

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B

a1/a2 = b1/b2 ≠ c1/c2

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C

a1/a2 = b1/b2 = c1/c2

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D

a1/a2 ≠ b1/b2

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Solution

The correct option is C

a1/a2 = b1/b2 = c1/c2


The condition for obtaining unique point for the lines a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 is a1a2 = b1b2 = c1c2.


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