The joint equation of pair of lines pass...

The joint equation of pair of lines passing through the origin and parallel to the lines
`y=m_(1)x+c_(1) and y=m_(2)x+c_(2)` is

A

(a) `m_(1)m_(2)x^(2)-(m_(1)+m_(2))xy+y^(2)=0`

B

(b) `m_(1)m_(2)x^(2)+(m_(1)+m_(2))xy+y^(2)=0`

C

(c) `m_(1)m_(2)y^(2)-(m_(1)+m_(2))xy+x^(2)=0`

D

(d) `m_(1)m_(2)y^(2)+(m_(1)+m_(2))+x^(2)=0`

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The correct Answer is:

A

NA

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