A linear function is used to model the altitude (in meters) of a descending drone seconds after it begins its descent from a tall building. The equation is . If this equation is graphed in the -plane, what does the -intercept (or -intercept) of the graph represent in this context?
The rate at which the drone descends in meters per second.
The altitude of the drone before it began its descent.
The time it takes for the drone to reach the ground.
The altitude of the drone after 15 seconds.
