Graphing Trig Functions
Grade 9th Grade · Math · 45 min
What's Included
Learning Objective
I can graph trigonometric functions and identify key features such as amplitude and period.
Warm-Up Video
Khan Academy · 9:55
Graphing trig functions
Guided Notes
3 key concepts
- 1
The amplitude of the function f(x) = 2sin(½x) is 2, which means the function oscillates between y = 2 and y = -2.
- 2
The general form of a sine function is f(x) = A sin((2π/P)x), where A is the amplitude and P is the period.
- 3
Given the graph of a trigonometric function, the period can be determined by measuring the horizontal distance it takes for the function to complete one cycle, and the amplitude is how much it swings in the positive or negative direction.
Practice Questions
8 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“The equation for a sine function is f(x) = A sin(Bx), where A is the amplitude and the period is 2π/B. For the function f(x) = 3 sin(½x), what is the amplitude and what is the period?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
