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Let L be the line joing the origin to th...

Let L be the line joing the origin to the point of interesection of the lines represecnted by `2x^(2)-3xy-2y^(2)+10x+5y=0`. If L is perpendicular to the line kx+y+3=0, then k=

A

`(1)/(2)`

B

`-(1)/(2)`

C

`-1`

D

`(1)/(3)`

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The correct Answer is:
B
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