If the lines represented by 3y^(2)+9xy+k...

If the lines represented by `3y^(2)+9xy+kx^(2)=0` are perpendicular to eachother then `k=`

A

(a) `1`

B

(b) `-2`

C

(c) `-3`

D

(d) `0`

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The correct Answer is:

C

NA

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