Identifying Growth and Decay Exponential Functions

What is the equation that represents the exponential function in the image below?

• y=3(½)^x

• y=3(2)^x

• y=(2)^x

• y=2(3)^x

Does the table represent an exponential function? Explain why.

• No, because the x-values increase by 1 each time.

• Yes, because the y-values are increasing.

• Yes, because the y-values are multiplied by 2 each time.

• No, because the y-values are decreasing.

Does the table represent exponential GROWTH or DECAY?

• Growth

• Decay

Which function below represents exponential GROWTH?

Which function below represents exponential DECAY?

Which graph below represents an exponential function?

• 
• 
• 
• 

Select ALL of the graphs that represent exponential GROWTH.

• 
• 
• 
• 

• The population is growing.

• The population is decaying.

• 2

• 3

• x

• 6

• 2

• 3

• x

• 6