Graphs of Exponential Functions

Essential Question: How do we represent exponential functions graphically?

 

Warm up

S S.10 Example 1

A.1.3.Exa1

 

Lesson

S.11 Example 2: Bacteria GrowthT

A.1.3.Exa2table1

  • If we continued this table to 4 seconds, how many bacteria would you expect to see?
  • What about 5 seconds?

A.1.3.Exa3.sec

  • Will the curve ever be perfectly vertical?
  • Adjust to real time: The narrator said, “Just one bacterium, dividing every 20 minutes…” How much time passed in the video? How do we adjust out table and graph?

 

A.1.3.Exa2min

  • What scale should we use for the vertical axis?
  • How can we estimate the number of bacteria at greater time intervals?

 

A.1.3.Exa2hours

  • What does the curve represent between the points?

 

Problems

S S.13-15

 

Exit

A.1.3.Exit