Axis of Symmetry, Vertex, X-Intercepts

Find the axis of symmetry for the graph

Use the picture to find the vertex and axis of symmetry:

Which value is the vertex?

Using the graph of the quadratic function $$g\left(x\right)=2x^2+4x$$ identify the following key features:

The line that goes through the vertex of a parabola is called the...

Identify the vertex and axis of symmetry: $$f\left(x\right)=2x^2-4x-1$$

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

What are the x- intercepts?

Identify the vertex and axis of symmetry: $$f\left(x\right)=2x^2-4x-1$$