Question

Imagine this:

The altitude of an airplane coming in for a landing is represented by the equation shown below, where y represents the
altitude, in feet, of the airplane and x represents the number of minutes the plane has been descending:
y = -750x + 30,000
Part A:
Create a table for the values when x = 0,5, 8, 10, 30.
-
Include worked-out equations used to identify the values within the table.
Part B:
dentify the altitude after 5 minutes and after 30 minutes. Use 1-2 sentences to explain the altitude at these two times
and describe what is happening to the airplane at these time intervals.

Answer 1

Just put x values from domain and get y

Table

`\boxed{\begin{array}c\boxed{\bf x} &\boxed{\bf y}\\ \sf 0 &\sf 30000 \\ \sf 5 &\sf 26250 \\ \sf 8 &\sf 24000 \\ \sf 10 &\sf 22500 \\ \sf 30 &\sf 7500 \end{array}}`

Answer 2

Part A

Input each value if x into the equation to find y:

x y

0 30,000

5 26,250

8 24000

10 22,500

30 7,500

Part B

The altitude after 5 minutes is 26,250 feet, and after 30 minutes is 7,500 feet.