1. To determine if a function is increasing or decreasing, we first need to know the function itself. 2. If the function is given as $y=f(x)$, we find its derivative $f'(x)$. 3. If $f'(x) > 0$ for all $x$ in an interval, the function is increasing on that interval. 4. If $f'(x) < 0$ for all $x$ in an interval, the function is decreasing on that interval. 5. Without the specific function, we cannot definitively say if it is increasing or decreasing. 6. Please provide the function or more details to analyze its behavior.