FooPlot

FOOPLOT (click to visit fooplot.com)

this picture shows free filed. now you can draw some parabolas on this page.

this picture shows where you should write inputs. and you can also add new functions and parameters here.

here is settings. you can set the dimension, arrange the background of  your drawing.

here is amazing part of this program. you can enregister what you draw and you can also share your drawing. if you want you may add link your drawing to a page.

 I draw a few graphs to show you what kind of  plotting 

 here is the graph of  x^24 .

here is the graph of x^5 .

there are two parameters here. a line and a parabola. this applet shows the intersection of the line and the parabola.

this program can be used by students and theachers. it helps students to draw graphs easily while they are studying or doing assigments. theachers also use this program to teach graphs about parabolas and lines to their students.

for the last, there is a video about fooplot.com 

http://www.fooplot.com