Question

helppp if you understand direct variation

Answer 1

did you ask google

Answer 2

If not then here

Answer 3

so f(x)=-3x would that be a direct variation

Answer 4

I'm calculating...

Answer 5

Yes, f(x) = -3x would be a direct variation with constant of variation k = -3

It just needs to follow the basic y = kx format (you may see other variables instead of x and y)