Your task on this run is to control your speed with turn shape. This is accomplished by making round turns. On skis you will make very round, complete turns on the steeper sections, round but more 'S' shaped turns where it is flatter. The idea is to match your turn shape to the terrain. This tactic causes you to flow down the hill.
Advanced skiers use the terrain to their advantage.
Remember to look ahead so you can anticipate both terrain changes and changes in snow conditions. Add a pole plant to trigger the rhythm changes caused by the terrain changes. As you approach a transition, your downhill pole swings forward, touches the snow, then simply turn around your pole. I think of the cadence as swing, touch, and turn. This cadence can be shortened to just touch, turn for quick, short radius turns, or it can be lengthened for longer turns.