Question

Which of the following equations is of a parabola with a vertex at (0, -3)?



y = (x - 3)2
y = (x + 3)2
y = x2 - 3
y = x2 + 3

Answer 1

\[y=a(x-h)^2+k \]
is vertex form because it tells us that the vertex is (h,k)

Answer 2

Your h here is 0 and your k is -3.

Answer 3

thanks!

Answer 4

plug in that form above and let a be 1 since the coefficient of your x^2 square choices are all one.

Answer 5

Ok. Well np. I'm glad you got it. :)