Lyrics and Performance by Vicki Young
Melody: "You Are My Sunshine"
The other day, dear, as I was graphing,
Instead of one line there were two!
I was perplexed until I realized
My teacher would tell me what to do.
When you have two lines, it's called a system,
And there are three outcomes you'll view:
They're parallel lines or they're the same line
Or they cross in one point that is true.