13-20 ■ Graphing Shifted Parabolas An equation of a parabola is given.(a) Find the vertex, focus, and directrix of the parabola. (b) Sketch a graph showing the parabola and its directrix.
The vertex, focus, and directrix of the parabola.
The equation of parabola is,
The following equation is the basic equation for an parabola that is not centered at the origin.
With the following properties,
Focus or ……
Directrix or ……
Consider the equation,
Convert the above equation into equation of parabola.
Compare the equation of the parabola with the standard equation.
Calculate the vertex of the parabola
The graph of the parabola and its directrix.
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