Exploring Proportional Relationships

Slide the LARGE SLIDER (at the bottom) really slowly. After doing so, move the LARGE BLACK POINT that appears on the graph to create various scenarios.
What do you notice? What do you wonder? What can we conclude about the graph of a proportional relationship?
Suppose the point [math]\left(6,3\right)[/math] lies on the graph of a proportional relationship. Which of the following points would also lie on this graph?

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