You used tables and graphs to show how to represent situations with a constant rate of change, such as those involving scaling.

For example, suppose a scale model is built using a scale of 1 over 4 1 4 inch to 4 feet. You can use this scale to build a table of values.

Scaled
Dimensions		 0.25 inch 0.5 inch 1 inch 1.5 inches 2 inches
Original
Dimensions		 4 feet 8 feet 16 feet 24 feet 32 feet

Once you have a table of values, you can build a graph.

graph showing table of values and connecting line

From the graph, you can then identify additional values that match the same scale.