Question

The combined equation of bisector of angle between the lines $L_1$ and $L_2$ is $2x^2-3xy-2y^2-x+7y-3=0$.$P(4,-3)$ is point on $L_1$, If the equation of obtuse angle bisecrot is $ax+by-3=0$, then

• A. $|a-b|$ is 9
• B. $|\frac{b}{a}|$ is prime number
• C. $|b+a|$ is prime number
• D. a is prime number

Answer 1

Answer: (A), (C)

The correct options are
A $|a-b|$ is 9
C $|b+a|$ is prime number