Posted by **Lee** on Friday, January 4, 2013 at 10:36am.

What is the equation in standard form, of a parabola that models the values in the table?

x f(x)

-2 4

0 -6

4 70

- algebra -
**Steve**, Friday, January 4, 2013 at 11:54am
let y = ax^2+bx+c

it's easy to see that c=-6, so

4a-2b = 10

16a + 4b = 70

(a,b)=(4,3) and so

y = 4x^2+3x-6

- algebra -
**Lee**, Friday, January 4, 2013 at 12:15pm
thank you, helped explaining the answer

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