ONLINE GRAPH BUILDER (makes png images,
which you can label and use or convert to other image type)

 

Maximum y value you could have:

Minimum y value you could have: 

width (a reasonable pixel width, providing reasonable spread to see things -- x scaling is auto):
                                                   

height (a reasonable pixel height, providing reasonable spread to see things -- y scaling is auto):
                                                   

Your x and y values (as [ [x1,y1], [x2,y2], [x3,y3], ... [xn,yn] ], example.:   [ [0,0], [2,10], [3,50], [7,70], [8,90], [10,40] ]   ):
                                                   

(Do not forget the outer brackets, [ and ], on the ends; make sure each pair is
in [] brackets and each pair sep. by a comma AND ea. x & y sep. by a comma.
There are no parentheses used in the contents of the textbox.)