1. Give an example of an open equation.

Question

2. How can you use an equation to make a prediction from a pattern ?

Answer 1

http://en.wikipedia.org/wiki/Open_sentence

The equation approximates the pattern, so you can predict.

for instance, the equation x= 4t approximates what you observe for t= 3, or 5, 6, 17, and 89
so then you can predict x when t=9.1

Answer 2

so x=4m m=7 is that an open equation