In which equation is x the independent variable?

A. x=7y

B. y=7x

C. y+7=x

D. y/7=x

B is the answer.

A) No because the value of x depends on what 7•y is

C) No because x depends on the value of y+7

D) No because the x depends on the value of y/7

In other words, on B, x doesn't depend on anything, your just given the value of it. Don't know how else to explain it, hope you get it.