To find a vertex of a parabola, use the equation -b / 2a to find the AOS.
[tex]y = x^{2} -x + 2[/tex]
[tex] \frac{-1}{2} [/tex]
If the x - coordinate of the equation is [tex] -\frac{1}{2} [/tex], then plug that value of x in:
[tex]y = \frac{1}{4} + \frac{1}{2} + 2[/tex]
The y-coordinate is [tex] \frac{11}{4} [/tex]
