Let be the level of lake Malawi’s water at a fixed location as a function of the date in the year 2016. The date is measured from January 1, and the level is measured in centimeters above or below the mark set on January 1. Given that the lake is filled by rain that falls between November and April and that the Shire River is the sole outlet, which of the following is a possible graph of ?
Determine the decreasing interval of the following graph.
True or False: The following figure is a linear graph.