5th question
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/find-k-if-the-equation-x2-3xy-2y2-x-y-k-0-represe/pair-of-straight-lines/11625819
Regards
https://www.meritnation.com/ask-answer/question/find-k-if-the-equation-x2-3xy-2y2-x-y-k-0-represe/pair-of-straight-lines/11625819
Regards