Consider the quadratic function defined by the equation:
$$f(x) = 2x^2 - 8x + 6$$
To find the $x$-coordinate of the vertex of this parabola, you can use the vertex formula:
$$x = -\f\frac{b}{2a}$$
where $a$ and $b$ are the coefficients from the standard form of the quadratic equation, $$ax^2 + bx + c$$. Calculate the $x$-coordinate of the vertex and enter your answer in the grid below as a decimal.