Final answer:
A Burndown Chart is a graphical representation of the work remaining versus the time left in a timebox.
Step-by-step explanation:
The term for a graphical representation of the work remaining versus the time left in a timebox is Burndown Chart. A Burndown Chart is commonly used in Agile project management to track progress and visualize how much work is remaining over time. It is a line chart that shows the amount of work that should have been completed by a certain point in time, compared to the actual work completed.