Image description: Marissa and Khalid are sitting at a desk in a classroom.
Marissa: Khalid, I think we will need two different types of functions for these data sets.
Khalid: How do you know?
Marissa: Well, when I graph the data, one looks fairly linear and the other has a clear curve. So, let’s make sure to explore many models before deciding on a model of best fit.
Image description: Two graphs appear on the screen. One graph shows a line, and the other shows a curve.
Khalid: Let’s start with the vertical position data.