**Now, I want to look more at graphs, so let's look at this like**

**Let's look at Standard Parabola Guy:**

**Before we look at the graph, let's think about it again...**

**What x guys are we allowed to put into this thing?**

**Now, I want to look more at graphs, so let's look at this like**

**Let's look at Standard Parabola Guy:**

**Before we look at the graph, let's think about it again...**

**What x guys are we allowed to put into this thing?**