Question 84637
Hello there,

Do not be frightened by the decimals. 

Simply substitute each pair of coordinates into the equation:

y = ax^2 + bx + c

You should arrive at:

a + b + c = 0 ------------(1)
0.256a - 0.16b + c = -2 --(2)
0.4489a + 0.67b + c = 0 --(3)

Solve the system. You can plug in the values for a, b, c into the first equation to see if they are right.