Question

6. Find p and q, if the equation
2x2 + 8xy + py2 + x + 2y - 15 = 0 represents a pair
of parallel lines.​

Answer 1

Answer:

2×2+8xy+py2+x+ 2y-15=0

=4+8xy+2xy-15+py2=0

=4-15+8xy+2xy+py2=0

=-11+10xy+py2=0

=-11+2y(5x+p)=0