For a determinate beam, what specific quantity does the ordinate of an influence line for a reaction represent when a unit load is placed at that specific point?

For a determinate beam, an influence line is a graphical representation showing the variation of a specific response, such as a reaction force, at a *fixed pointon the structure as a *unit loadmoves across the beam's span. The term 'determinate beam' signifies that all reactions and internal forces can be calculated using only the equations of static equilibrium. The 'ordinate' refers to the vertical value on this graph at any gi....