Question

How do you find the vertex of `y=x^2 - 5x + 4`?

Answer 1

`(5/2,(-9)/4)`

Explanation:

`(-b)/(2a)` gives the x coord of the vertex

`=> (- -5)/2=2 1/2`

When `x=2 1/2, y=25/4-25/2+4=(-9)/4`