Bit of help please chaps:
Finding the vertex of a Parabola, two methods, graph and formula.
Now when i've graphed it, it comes out positive in terms of co-ordinates, however when you apply the formula:
Letting a= -5, b= 10, c= 0
For X Co-Ord
For Y Co-Ord
The vertex of the parabola on the graph shows X = 1 and Y = 5 so how or why am i getting the negatives?!