Parabolas 4

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Taught by YourMathGal
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Lesson Summary:

In this lesson on Parabolas, we learn about graphing parabolas in the form of f of x equals plus or minus x minus h squared plus k. The coefficient of x squared determines whether the parabola opens upward or downward. The axis of symmetry is x equals h and the vertex is h k. By using either ordered pairs or the y equals x squared method, we can graph the parabola either upward or downward. Remember, this is just one form of a parabola and there will be other forms discussed in later videos.

Lesson Description:

Graphing Parabolas Part 4;

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you graph a parabola?
  • How do you find the vertex point and axis of symmetry for a parabola of the form f(x) = (x - h)^2 + k?
  • How do you know what points to pick to put into the equation to graph a quadratic equation to make a parabola?
  • How do you know whether a parabola will open upward or downward?
  • How do you know whether a parabola moves to the right, left, up, or down from the equation?
  • How do you graph a parabola of the form f(x) = (x - h)^2 + k?
  • How do you graph the function f(x) = -(x + 1)^2?
  • How do you graph the function f(x) = (x - 2)^2 - 4?
  • How do you graph the function f(x) = -(x - 3)^2 + 6?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson bring together adding or subtracting inside and outside of parentheses as well as have a negative sign in front of a quadratic equation. All steps involved in analyzing graphing the equations are explained. You can take your knowledge of what the graph y = x^2 looks like and apply the transformation that the equations suggest.