Finding the rate of change from a graph of a word problem

What is the rate of change typically represented as?

• The product of X and Y

• The sum of X and Y

• The change in Y over the change in X

• The change in X over the change in Y

In the hot air balloon example, what is the initial altitude of the balloon?

• 300 feet

• 0 feet

• 100 feet

• 200 feet

How long does it take for the balloon to descend from 200 feet to 0 feet?

• 30 minutes

• 45 minutes

• 60 minutes

• 90 minutes

What is the calculated rate of change (slope) for the balloon's descent?

• -3.33

• -2.5

• -1.33

• -1.67

Why is the slope of the balloon's descent negative?

• Because the balloon is ascending

• Because the graph moves upwards

• Because the graph moves downwards as it goes to the right

• Because the time is decreasing