Functions 6.6 Determining sinusoidal equations from graphs

How to determine the equations by using amplitude, the type of sinusoidal function (positive sine or cosine, negative sine or cosine), the period and the horizontal and vertical shifts. Focusing on the "Check your Understanding" page 391 see textbook link here: https://www.studocu.com/en-ca/document/carleton-university/precalculus-functions-and-graphs/other/nelson-functions-11-textbook/838290/view