Reflect on the concept of lines and quadratic functions.

1. What concepts (only the names) did you need to accommodate the concept of lines and quadratic functions in your mind?
2. What are the simplest line and quadratic functions you can imagine?
3. In your day to day, is there any occurring fact that can be interpreted as lines and quadratic functions?
4. What strategy are you using to get the graph of lines and quadratic functions?