Enter equation to graph, e.g. y=3x^2-1 Sample Problem Depdendent Variable Draw
You can write the vertex form for a quadratic equation if you have the vertex and one other point! This tutorial shows you how to take that information and write an equation for the quadratic in vertex form.
If you want to solve a quadratic equation that's in vertex form, it may be easier to first convert the equation to standard form. This tutorial shows you how to convert from vertex form to standard form!