Question

Decide which kind of change(s) is/are illustrated in each equation

(meaning changed from "regular" y=sinx or y=cosx)
→ Note: more than once choice may be circled per question.

Answer 1

Phase shift and period change

Rewriting the equation:

y = cos ( 2 ( x - 2 ) )

Phase shift 2 units to the right

Period changed to 2pi/2 = pi