For the plane force system given in the figure:

a$)$ Reduce the system to point O$.$

b$)$ Determine the equation of the line of action of the resultant force.

c$)$ Find the distance of the starting point from the line of action.

d$)$ Resolve the resultant into components along OA$,$ OB$,$ and AB directions.

Note: Coordinate values are given in meters.