The graph shows the altitude of a bird over time.

what is the slope of the line and what does it mean in this situation?

a. the slope is –500 . this means that the bird descends 500 m each minute.

b. the slope is –350 . this means that the bird descends 350 m each minute.

c. the slope is 350. this means that the bird ascends 350 m each minute.

d. the slope is 500. this means that the bird ascends 500 m each minute.