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If 2x^(2)+2y^(2)+4x+5y+1=0 and 3x^(2)+3y...

If `2x^(2)+2y^(2)`+4x+5y+1=0 and `3x^(2)+3y^(2)+6x`
-7y+3k=0 are orthogonal ,then value of k is

A

`(17)/(12)`

B

`(12)/(17)`

C

`(-12)/(17)`

D

`(-17)/(12)`

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KCET PREVIOUS YEAR PAPERS-SOLVED PAPER 2011-MATHEMATICS
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