Answer:
The constant of variation is -4
Step-by-step explanation:
If y is directly proprtional to x, then we write:
[tex]y \propto \: x[/tex]
If we introduce the constant of proportionality or variation k, then we obtain:
[tex]y = kx[/tex]
When x=1, y=-4 (We can choose any ordered pair from the table)
[tex] - 4 = k(1)[/tex]
[tex]k = - 4[/tex]
Therefore the constant of variation is -4.
