Final answer:
The constant proportionality in a graph represents the unit rate of change between two variables. To find it, you can choose two points on the graph and calculate the difference in the y-values divided by the difference in the x-values.
Step-by-step explanation:
The constant proportionality in a graph represents the unit rate of change between two variables. It is the ratio between the change in the dependent variable (y-axis) and the change in the independent variable (x-axis). To find the constant proportionality from the graph, you can choose two points and calculate the difference in the y-values divided by the difference in the x-values.
For example, let's say we have a graph with points (2, 4) and (6, 12). The difference in the y-values is 12 - 4 = 8, and the difference in the x-values is 6 - 2 = 4. So the constant proportionality or unit rate is 8/4 = 2.
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