1.
The blue curve on the following graph shows the height of an airplane over 10
minutes of flight. The two black lines are tangent to the curve at the points indicated
by A and B.

2.
. The unit of measurement for the slope of the curve is

3.
At point A, the slope of the curve is

At point A, the slope of the curve is the slope of the line tangent on point A. Take any two points