Answer:
a) h = 30000 - 2000m
b) the graph is attached
c) the slope = -2000
d) 30000ft
e) 8.5 mins
Step-by-step explanation:
Let h be the height of the plane.
Let r be the rate of descending
Let the be the time taken to descend
Height of plane = 30000ft
Rate of descension = 2000ft/min
a) h = 30000 - r(m)
h = 30000 - 2000m
b) when the plane flies at 2000ft/min, it will take
30000/2000
= 15mins
The graph has been attached
c) The slope is said to be the rise/run. It is a negative rise
y = mx + c
Where m is the slope.
Comparing y = mx + c to h = 30000 - 2000m
h = -2000m + 30000
The slope is -2000
d) y intercept represent 30000ft when the plane starts to descend. m = 0
h = -2000(0) + 30000
h = 30000ft
e) To reach 13000 ft, it will take
13000 = 30000 - 2000m
13000 - 30000 = -2000m
-17000 = -2000m
m = -17000/-2000
m = 8.5mins
