# How do you write the Vertex form equation of the parabola y= x^2 - 5x - 4?

$x = - \frac{b}{2 a} = \frac{5}{2}$
$y \left(\frac{5}{2}\right) = \frac{25}{4} - 5 \left(\frac{5}{2}\right) - 4 = - \frac{25}{4} - \frac{100}{4} = - \frac{125}{4}$
$3 y = {\left(x - \frac{5}{2}\right)}^{2} - \frac{125}{4}$