What we're going to do in this video is use the online graphing calculator Desmos and explore the relationship between vertical and horizontal asymptotes and think about how they relate to what we know about limits. So let's first graph two over x minus one. So let me get that one graphed. And so you can immediately see that something interesting happens at x is equal to one. If you were to just substitute x equals one into this expression, you're going to get two over zero. And whenever you get a non-zero thing over zero, that's a good sign that you might be dealing with a vertical asymptote. In fact, we can draw that vertical asymptote right over here at x equals one.