Trace of line appears at bottom of graph

The original link to your material should be this https://www.geogebra.org/m/ujg4v8eb

(this is a cleaner link without all the other unneded settings).

I can say that your applet is very big. Automatic resizing of the app on the ipad shows the little black pixels, while on a laptop this is slightly noticeable, even reducing the dimension of the app to 1024x768.

Anyway the Materials team will look into it.

Please post a screenshot showing the problem

See the black pixels on the bottom of the box. This happens when you move the line with the blue slider.

How can I make sure that the app is less big? I try to manually modify the with and height in the url when I embed it in a webpage.

It looks like a problem with a strange pixel ratio. How many pixels is your monitor? Is the page zoomed?

> How can I make sure that the app is less big?

Make the window size smaller before uploading, or "Edit Activity" -> "Pencil" -> Advanced Settings

I can also reproduce the problem in this jsbin:

https://jsbin.com/qimegad/1...

I can reproduce this problem with:

* a macbook pro screen with 2880x1800 pixels

* an iPhone 6S screen

* a Dell U2412M 1920x1200 desktop screen.

I can not reproduce it in JSBIN windows 7 1600x900

The same problems appear to happen also in Windows 10, tested on 3 different laptops.

> I can not reproduce it in JSBIN windows 7 1600x900

Did you drag the line with the blue slider?

of course