While the letter F is translated (glide) and a reflection in the x-Axis, the lesson being shown applies to glide-translations. check each box separately/together to learn about the coordinates relate the Pre-Image.and Image. Note: You can move Point Q to modify the translation even more than horizontally. Click the grid button. Then click the show translation button. Write down the coordinates for A' and D'. Write a transformation rule. Then click the show glide reflection button. Write down the coordinates for A'' and D''. Write a transformation rule. What would the coordinates be for A' and D' if you rotated the figure F 180 degrees? Is this the same thing as a glide reflection?
http://www.maa.org/sites/default/files/images/upload_library/47/Crowe/GeoGebra_Activity_4.html by Cheryll E. Crowe, Eastern Kentucky University