Answer:
y = -3x; the const. of prop. is -3.
Explanation:
Recall: a proportional relationship satisfies y = kx, where k is the constant of proportionality.
In this particular example we see that (-3)(-2) = 6, (-3)(1) = -3, and (-3)(2) = -6.
This confirms adherence to the equation of a proportional relationship. The constant of proportionality here is -3.
The function governing the table is y = -3x.