Which transformations are needed to change the parent cosine function to the cosine function below? A coordinate plane. The graph starts and rises through (negative 3 pi comma 1). It starts to fall through (negative 5 pi over 2 comma 0) to (negative 2 pi comma negative 1). It then rises through (negative 3 pi over 2 comma 0) to (negative pi comma 1). It then falls through (negative pi over 2 comma 0) to (0 comma negative 1). It then rises through (pi over 2 comma 0) to (pi comma 1). It then falls through (3 pi over 2 comma 0) to (2 pi comma negative 1). It then rises though (5 pi over 2 comma 0) to (3 pi comma 1).