**In
the next sections, I'll be telling you more about these equations and you'll be learning about graphing and much, much more! Tell them what they'll be learning, Bob!**

**Welllll...
In the next exciting and action packed lessons, our lucky students will be
learning about**

**Equations
of linesSlopesGraphingandFinding equations**

**Information
like this would usually sell for $500... But, for our students today
we have a special deal. All of these lessons and more for the just 14 easy payments of $59.99!**

**(I
really need to stop watching infomercials while I'm writing these lessons.)**

**So, how can we be
sure that a specific point is really ON a line?**

**Graphing
could be one way to get a general idea... But, there are two problems with
this**

1) |
I haven't shown
you how to graph lines yet. |

2) |
You can't always
be sure with just the graph. |

**Check it out:**

**Here's the graph:(Don't worry, I'll
show you how to graph these soon. I know you're
very excited about all this!)**

**But,
what if it's not so easy to be sure?**