## Prepare a Presentation

## Work Time

# Prepare a Presentation

You know that the graph of a proportional relationship is a straight line. What do you notice about where the graph of a proportional relationship intersects the vertical axis?

- Compare your graph of the stack of cups to your graph of the stack of books. Prepare a presentation about your findings. Justify your thinking.

# Challenge Problem

- Look at the graph you made for the stack of cups and the stack of books. Each one of your graphs should consist of separate points that are not connected by a line. Explain why.

## Hint:

In particular, what is different about your two graphs? What does this difference tell you?