The constant of proportionality in table four is -1/3
Proportional Relationship
Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".
In each of the table, we can check if proportionality exists.
In the first table, there's no proportionality.
In the second table, there's no proportionality
In the third table, there's no proportionality
In the fourth table, proportionality exist here which we can find the constant of proportionality.
When x = 6, y = -2
y = ax
a = constant of proportionality
-2 = a(6)
a = -1/3
The constant of proportionality is -1/3
Learn more on proportions here;
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