or

where (

*h,k*) is the coordinate of the vertex (labeled as

*V*in the graph).

For the parabola of type (1), the parabola is either opening upwards (

*p*> 0) or downwards(

*p*< 0). This type of parabola has a focus at

*F*(

*h, k + p*) and a directrix at

*y = k - p*.

On the other hand, for the parabola of type (2), the parabola is either opening rightwards (

*p*> 0) or leftwards(

*p*< 0). This type of parabola has a focus at

*F*(

*h*+

*p*, k) and a directrix at

*x = h - p*.

Betty, Created with GeoGebra

hello , I am a mathematics teacher from India.

ReplyDeleteHave a look at my blog http://mathematicsbhilai.blogspot.com/

Please link it with your blog.

Sanjay Gulati

Your blog is very interesting. I've put your link in my "Links" page.

ReplyDelete