Graphing quadratic functions: General form VS. Vertex form

Graphing quadratic functions: General form VS. Vertex form

In this lesson, Dennis will show us how to look for the y-intercept, x-intercept and vertex of a parabola from its general form and then sketch the parabola.

Lessons

  • 1.
    Graphing Quadratic Functions in General Form
    y=2x212x+10y = 2{x^2} - 12x + 10 is a quadratic function in general form.
    a)
    Determine:
    • y-intercept
    • x-intercepts
    • vertex

    b)
    Sketch the graph.


  • 2.
    Graphing Quadratic Functions in Vertex Form
    y=2(x3)28y = 2{\left( {x - 3} \right)^2} - 8 is a quadratic function in vertex form.
    a)
    Determine:
    • y-intercept
    • x-intercepts
    • vertex

    b)
    Sketch the graph.