Step 1 :Consider the following relation: \(2x - y = -5x - 4y\)
Step 2 :Rewrite the relation as a function of x.
Step 3 :To do this, we need to isolate y on one side of the equation.
Step 4 :The solution to the equation when solved for y is \(-\frac{7x}{3}\).
Step 5 :This means that the function of x, f(x), is \(-\frac{7x}{3}\).
Step 6 :Final Answer: \(f(x)= \boxed{-\frac{7x}{3}}\)