Question

a helicopter comes down for landing and descends at a constant rate. while it is on the ground, it picks up two passengers. then, the helicopter takes off and ascends at a constant rate. the slope is \boxed{}

Explanation:

Step1: Identify two points on the ascending line

We look at the yellow line (ascending phase). Two clear points are (16, 800) and (20, 3200).

Step2: Use the slope formula

The slope formula is $m = \frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 16$, $y_1 = 800$, $x_2 = 20$, $y_2 = 3200$.
So, $m = \frac{3200 - 800}{20 - 16} = \frac{2400}{4} = 600$.

Answer:

600