Question

find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function

im confuse help?

1. y= 2x^2 + 3
2. y= -3x^2 + 12x +1
3. f(x) = 2x^2 + 4x - 1

Answer 1

since most these equations have a ^2 in them, i think they are all parabolas.
if we can get them into vertex form of a parabola, we can then answer the questions.
vertex from looks like this:
y = a(x-h)^2 + k
where (h,k) is the vertex

Answer 2

do you need anymore help?