the points represent a parabola
the equation is

we need the first three points
in this case, I will use
(1,2) (2,5) and (3,10)
for the point (1,2)

for the point (2,5)

for the point (3,10)

we have a system of three equations and three variables

solving the system equation we obtain the values of a,b and c

the equation is
