Question

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

x -2 0 4
f(x) -7 3 -73

A. y = -3x^2 - 3x + 4

B. y = 4x^2 + 3x - 3

C. y = -4x^2 - 3x + 3

D. y = -3x^2 - 4x + 3 my answer is B can some one tell me if im correct on this

Answer 1

it can't be B, here's why

when x = -2, y is..

y = 4x^2 + 3x - 3

y = 4(-2)^2 + 3(-2) - 3

y = 4(4) + 3(-2) - 3

y = 16 - 6 - 3

y = 7

which is NOT -7 as shown in the table above.

Answer 2

ok

Answer 3

so it would be C

Answer 4

you got it

Answer 5

good i thought that was it but for some reason i kept thinking it was B