Pre-calculus worksheet featuring four trigonometric function graphs: f(x) = 4 sin(x), g(x) = sin(x/3), h(x) = 4 + cos(x), and k(x) = -cos(4x), each plotted with at least two periods and annotated with key features and transformations.

Graphs of sine and cosine functions on a grid, including transformations like amplitude, period, and vertical shifts, with handwritten notes indicating reflections and calculations.