Answer:
The rate of change is 400
The altitude increases by 400 feet every minute.
Explanation:
We Know
x = the number of minutes the balloon rises.
y = altitude of the balloon.
To find the Rate of change (slope), we can use rise/run or (y2 - y1) / (x2 - x1)
Pick 2 points (0, 150) (1, 550)
We see the y increase by 400 and the x increase by 1, so
The rate of change is 400
The altitude increases by 400 feet every minute.