# Graphs of Quadratic Expressions, Vertex Formula and Standard Form

There are many more videos in the same sequence.  This list is a minimum, but please watch more if they are helpful.

1. $\rhd$ Finding the vertex and axis of symmetry of a parabola.  Example used is $y = -x^2 +8x +8$.
2. $\rhd$ Forms and features of quadratic functions (8:28)
Here we see how factoring can be used to find the zeros ($x$-intercepts) and the vertex form reveals the vertex and axis of symmetry using $f(x) = x^2-5x+6$.
3. $\star$ Practice finding the roots, vertex, and axis of symmetry of a quadratic function.