Intro to Exponential Functions

Describe the function:

• exponential growth

• exponential decay

Which function has the greatest y-intercept?

What pattern do you see in this table?

• The number of circles increases by 2 from one stage to the next

• The number of circles doubles from one stage to the next

• The number of circles increases by 2 then by 4 for the rest of the stages

• There is no pattern

Which one is an exponential function?

• A

• B

• C

• B and C

• None of them.

What is the range of this graph?

• y = 6
• (0, -4)
• y > -6
• y < -6

Identify the growth factor (b-value) of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

Look at the graph and answer each question.

Is it a growth or decay?

What is the y-intercept?

What is the asymptote?

• Growth

  y-intercept: (0, 5)

  asymptote: y = 0

• Decay

  y-intercept: (0, 5)

  asymptote: y = 0

• Growth

  y-intercept: (0, 5)

  asymptote: y = 5

• Decay

  y-intercept: (5, 0)

  asymptote: x = 0

• The function represents exponential growth

• The domain is all real numbers 

• The range is all real numbers 

What is the y-intercept of the function?

• 2
• 3
• 1
• -2