Question

Which of the following represents the graph?

http://prntscr.com/3ys61c

Answer 1

Vertex form, hm,

Well the "k" part in \(\ \sf y = a(x - h)^2 + k \) is where the parabola will move, up or down. It's on (2,3) so "k" is +3.

The parabola will be wider if "a" is a decimal from 0 to 1, like 1/2 -> 0.50

The vertex is (h, k), your vertex is (2, 3) so "h" was -2. Now you're only left with one option.

Answer 2

I haven't used vertex form in a while. Sorry it took me a while to try to remember some of this x_x

Answer 3

Its alright so A?

Answer 4

No, close

Answer 5

C actually

Answer 6

An even faster method is just locating the vertex the axis of symmetry is the "x" part in the coordinate of the vertex. \(\ \sf (\color{blue}{2}, 3) \) \(\ \sf \color{blue}{x} = 2 \) this is where the parabola can be cut into two halves.

Answer 7

Yes. C :3

Answer 8

alright thanks

Answer 9

Yw