Question

Find a quadratic model for the set of values. (–2, –20), (0, –4), (4, –20)
A. y = 4x2 + 4x + 2
B. y = 2x2 - 4x + 4
C. y = 4x2 - 2x - 4
D. y = -2x2 + 4x - 4

Answer 1

Try this.
x y x y x y
(-2, -20) (0,-4) (4,-20)
You have to substitute the three values of x in each equation and if you obtain the y respect of each x then that equation is the correct one.
for example:
\[4(-2)^{2}+4(-2)+2\]=?
And do the same thing to the other x and etc.etc.