Quadratic function in vertex form: y = a(x-p)^2 + q

  1. y=2(x3)28y = 2{\left( {x - 3} \right)^2} - 8 is a quadratic function in vertex form.
    1. Determine:
      • y-intercept
      • x-intercepts
      • vertex
    2. Sketch the graph.
Topic Notes
Besides the general form, the vertex form is also another way to express a quadratic function. In this lesson, we will talk about how to find the x-intercepts, y-intercepts, vertex of quadratic functions in vertex form.