Identifying features of functions can be a bit confusing, but I've learned some important lessons along the way. Here are some common mistakes to watch out for:

1. Skipping the Axes: Always label your axes when you make a graph. It might seem simple, but if you forget to do this, it can be hard to understand what the graph shows.

2. Overlooking Intercepts: Don’t ignore the $x$- and $y$-intercepts. To find the $x$-intercept, set $y=0$. To find the $y$-intercept, set $x=0$. These points are key to understanding how the function behaves.

3. Ignoring Slope: When you're looking at straight-line functions, the slope is super important! A positive slope means the line goes up, while a negative slope means it goes down. Also, don't forget about vertical and horizontal lines, as they have special slopes too.

4. Neglecting Context: Always think about the situation you're dealing with. Are you looking at real-world data? Make sure to take the context into account, as this helps explain what the features really mean.

By keeping these tips in mind, you'll get a better grasp of the functions you're studying!