Find the differential equation of the family of all straight lines passing through the origin.

The differential equation of all straight lines passing through the point (1,-1) is

Which of the following straight lines passes through the origin?

The differential equation of all straight lines passing through (0,2) is given as

The differential equation of the family of circles passing through the origin and having centres on the x-axis is

The differential equation of the family of circles passing through the origin and having centres on the x-axis is :

The differntial equation of all straight line passing through origin is