Nana's Paint Mix Up Part 2

This applet is based on Dan Meyer's lesson "Nana's Paint Mix Up." Watch the video here: https://vimeo.com/87211369 and "fix" the mix up. Then play with the graph below. Toggle the slider to get a sense of how we can graph the color mixture.
How does toggling the slider change line? [br][br]How does it change the graph? [br][br]Can you infer what color is represented by each axis?[br][br]How do the points connect the idea of mixing red and white paint?[br][br]Do you think we should connect the points on this graph?

Information: Nana's Paint Mix Up Part 2