1. Pay it Forward Video Clip

2. Set up an t-chart to show how many people are helped for that particular day.

3. What equation would match our table?
Y = 3^x Discuss what the x and y represent in the equation in relation to the story line.

4. How many people have been helped on day 10?
Using your equation…
How many people have been helped on day 10?
On day 15?
If ALL of Hillgrove received a good deed on the same day, what day would that be?
Y = 3^x

5. Coordinate Algebra
UNIT QUESTION: How can we use real-world situations to construct and compare linear and exponential models and solve problems?
Standards: MCC9-12.A.REI.10, 11, F.IF.1-7, 9, F.BF.1-3, F.LE.1-3, 5
Today’s Question:
How can I tell if an exponential function is a growth or decay curve?
Standard: MCC9-12.F.LE.1c

6. Exponential Transformations

7. Graphing Exponential Functions

8. Example 1 y = 3x+2 Domain: Range: Asymptote: Increase/Decrease
Draw the parent graph first in one color. Use a different color for the transformed function

9. Example 2 f(x) = 2x-1 Domain: Range: Asymptote: Increase/Decrease
Draw the parent graph first in one color. Use a different color for the transformed function

10. Example 3 f(x) = 2x-1+3 Domain: Range: Asymptote: Increase/Decrease
Draw the parent graph first in one color. Use a different color for the transformed function

11. Try These!
Draw the parent graph first in one color. Use a different color for the transformed function

12. Exponential Growth or Decay

13. Growth or Decay
b>1
0<b<1

14. Neither Growth Nor Decay

15. Growth Or Decay?

16. Graphing Exponential Functions