# Hot- Air Balloon.

### Maya Joseph, Swathi, Ali

## Question 1

x-rate of descending

y- altitude

Function:

f(x)= 800-20x

## Question 3 The ballon was 900ft above the ground before it was sighted. The graph is showing the balloon 5 minutes before it was sighted at 900ft. So it has gone past the positive y axis. | ## Question 4 It will take the balloon 39 minutes(since seen at 800ft) to reach an altitude of 20 feet. The balloon will take the balloon 40 minutes to land. -You find this by looking on the table you can see when the balloon lands at(40,0) -If the ballon takes 40 minutes to land and It is decreasing by 20 ft per minute then the ballon takes 39 minutes to reach an altitude of 20 ft since it was first seen. | ## Question 5The 2nd balloon Function:f(x)= 1200-20x It will take the 2nd ballon 20 minutes longer to land then the 1st balloon. The descent of the 2 balloons is the same since they both at descending at 20 ft pre minute. Both of the lines have the same slope, but they have different y-intercepts. |

## Question 3

The graph is showing the balloon 5 minutes before it was sighted at 900ft.

So it has gone past the positive y axis.

## Question 4

The balloon will take the balloon 40 minutes to land.

-You find this by looking on the table you can see when the balloon lands at(40,0)

-If the ballon takes 40 minutes to land and It is decreasing by 20 ft per minute then the ballon takes 39 minutes to reach an altitude of 20 ft since it was first seen.

## Question 8

f(x)= 1200-30x