marciosmg on 12 December 2008
y = ax2 + bx +c
xv = -b/2a
yv = -(b2 - 4ac)/4a
v = vertix (in your pics case xv = yv = 0)
NOw, for every (x,y) you have, you throw it in the y = ... equation to find a, b and c
Then you will get the whole y = ... eqaution which is the formula of that parabole (I don´t the name in english - that shape)
