## Functions Modeling Change: A Preparation for Calculus, 5th Edition

If $x\lt-1$, the function is increasing. If $x\gt-1$, the function is decreasing.
If $x\lt-1$, then as $x$ increases, $y$ increases, hence the function is increasing. If $x\gt-1$, then as $x$ increases, $y$ decreases, hence the function is decreasing.