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    Algebra
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  • Fraction Games Online
  • Like Terms Game
  • Geometry
    Interactive
    Trigonometry
    Teacher Resources
    Teaching Jobs USA
    Good Links

    The Parabola: Shape and Graph

     The graph, shape and equation of a parabola

    Parabolas  are a type of quadratic function. they always have one and only one squared term (either x2 or y2). The vertex of a parabola is the highest or lowest point of the parabola.
    The equation of a parabola is expressed either in vertex form or standard form.
    picture of parabola On the left is the graph of a parabola. Below are examples of equations of parabolas.
    • y=x2
    • x=y2
    • x=y2-4
    • y=x2+2x+3
     Plot Points to Create Graph  

    In order to find the general shape of a parabola and be able to graph it, try plotting points by substituting in values for one variable, usually x, then solving for the other variable, the y value.


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