Question

Find a quadratic model for the set of values:
(-2,20), (0,-4),(4,-20)

First, 4,-20.. ahahha
Second, where do I begin?

Answer 1

\[y = ax^{2}+bx+c\]
use the 3 points to find a,b,c

by plugging in (0,-4) you get c = -4
plug in other 2 and you will have system of 2 equations