Find the condition that one of the lines given by `ax^2+2hxy+by^2=0` may coincide with one of the lines given by `a' x^2 +2h'xy+b'y^2=0`

Find the condition that the one of the lines given by ax^2+2hxy+by^2=0 may be perpendicular to one of the lines given by a'x^2+2h'xy+b'y^2=0

Find the condition that the one of the lines given by ax^2+2hxy+by^2=0 may be perpendicular to one of the lines given by a'x^2+2h'xy+b'y^2=0

If the line 3x-2y=0 coincide with one of the lines given by ax^(2)+2hxy+by^(2)=0 , then

If the line 4x+5y=0 coincide with one of the lines given by ax^(2)+2hxy+by^(2)=0 , then

If the line 4x-5y=0 coincide with one of the lines given by ax^(2)+2hxy+by^(2)=0 , then

If the line px +qy =0 coincides with one of the lines given by ax^(2)+2hxty+by^(2)=0 then

The condition that one of the straight lines given by the equation ax^2+2hxy+by^2=0 " may coincide with one of those given by the equation " a'x^2+2h'xy+b' y^2=0 is

if one of the lines given by the equation ax^2+2hxy+by^2=0 coincides with one of the lines given by a'x^2+2h'xy+b'y^2=0 and the other lines representted by them be perpendicular , then . (ha'b')/(b'-a')=(h'ab)/(b-a)=1/2sqrt(-a a' b b')

if one of the lines given by the equation ax^2+2hxy+by^2=0 coincides with one of the lines given by a'x^2+2h'xy+b'y^2=0 and the other lines representted by them be perpendicular , then . (ha'b')/(b'-a')=(h'ab)/(b-a)=1/2sqrt((-aa'bb') .