Graph Y-Intercept =(0,2) Horizontal Asymptote X-Axis (y = 0) Domain: All Real Numbers Range: y > 0.

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Presentation transcript:

Graph Y-Intercept =(0,2) Horizontal Asymptote X-Axis (y = 0) Domain: All Real Numbers Range: y > 0

Objective: (1) Graphing Exponential Decay Functions (2) Using Exponential Decay Models. Agenda: 02/24/15 1.) Warm-up 2.) Questions: WS 8.1 A/B Exponential Growth 3.) Lesson: 8.2 Exponential Decay 4.) Class/Homework 5.) Work With Your Neighbor STAY ON TASK!!!

8.2 EXPONENTIAL DECAY Objective - To graph exponential decay functions and to model them in real-life situations. Examples a = Initial y – intercept b = base (0 < b < 1) h = horizontal shift k = vertical shift and horizontal asymptote Domain = All real numbers Range = if a > 0, then y > k if a < 0, then y < k

y x Graph Y – Int.: (0,-2) HA: y = 0 Domain: All Real Numbers Range: y < 0

y x Graph Y – Int. (0,-1) HA: y = 3 Domain: All Real Numbers Range: y < 3

You buy a new motorcycle for $18,000. If the value of the motorcycle decreases 14% each year, estimate the value after 3 years.

HOMEWORK WS 8.2 Practice A & B ALL