Hey Brian,
You might like to use the “F-Curve>Reduced Modification Mode” (RMC). Which has three options; Curve, Move and Scale. Please note that you can edit even the RMC to e.g. linear or take points away or add some. To just move the complete curve you need only to select all key-points. To scale time wise, go to the KEY frame window and after selecting the Keys, drag that “orange” handle bar (left or right) to scale in time, or the middle part to move in time.
All the best
Sassi