When I was learning parabola stuff, I remember that using the equation ax^2+bx+c=0 you could find the vertex of the equation, by plugging in some numbers?
I forgot the formula, so if anyone knows, please inform me :)
Thanks
The vertex is a point where the extremum of a parabola lies. The extrema can either be the maximum or the minimum depending on the parabola.
For a parabola defined as f(x)=ax2+bx+c, the point of the vertex lies at (−b2a,f(−b2a)).
aha! thanks!
+44 
