d=Vi t 1/2 at^2 is independent of what variable?

(1)a

(2)Vi

(3)Vf

(4)d

(1)a

(2)Vi

(3)Vf

(4)d

** I understand that "t" is the independent variable. However, that's not what the question is asking. The question is asking what variable that equation is

*independent of.*therefore, would it make sense to say that the answer is choice Vf because it does not appear in the equation at all? If it helps, this is how one would get to the equation above:

you would have to combine these two equations to eliminate Vf and get the equation in the question.

delta d = 1/2 (Vi +Vf) delta t

AND

Vf = Vi t a delta t