Answer:
The rate of descent is [tex]-67.5\frac{feet}{minute}[/tex]
Step-by-step explanation:
we know that
The formula to calculate the rate or slope between two points is equal to
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
Let
x------> the time in minutes
y----> the elevation in feet
we have
[tex]A(0,6,678)\ B(48,3,438)[/tex]
Substitute the values
[tex]m=\frac{3,438-6,678}{48-0}[/tex]
[tex]m=\frac{-3,240}{48}[/tex]
[tex]m=-67.5\frac{feet}{minute}[/tex]
