This was intended to be an introduction to graphing linear equations and function notation. Students create and graph linear functions to represent an asteroid falling to earth as well as functions for different missiles they can use to intercept it.
The powerpoint file is intended to be printed as a worksheet. The first slide is the student worksheet and the second one is the answer key.
Thanks! That idea actually came to me after I got annoyed that so many students kept asking "when am I ever gonna use this?" All the normal kinds of word problems and real-world scenarios didn't seem to be convincing them so I started trying to think of ways they could use algebra to save the world. I don't know if it convinced them that math is important, but it at least put a stop to those questions for one day, heh.