The differential equation of the family of all non-vertical lines in a plane is

Find the differential equation of the family of (i) all non- vertical lines in a plane

Find the differential equation of the family of (i) all non vertical lines in a plane (ii) all non horizontal lines in a plane

The differential equation of the family of all non-horizontal lines in a plane is

The differential equation of the family of lines y = mx is :

Find the differential equation of all non-vertical lines in a plane.

The differential equation of the family of parabolas y^(2)=4ax is

Find the differential equations of the family of all the ellipses having foci on the y-axis and centre at the origin.