For f(x) = x2, the instantaneous rate of change is known to be - 4 at x = - 2. Find the equation of the tangent line to the graph of y = f(x) at the point with x-coordinate - 2. The equation of the tangent line to the graph at the point with x-coordinate - 2 is E. (Type an equation. Use integers or fractions for any numbers in the equation.)