To scale in one direction: 1. Select the object, right click-scale, snap to point (left click on ) from wich you want the object to be scaled, enter the scale value, enter, done.
90 percent of the problems i take a picture of can be done by the app, and it even shows you how they did it, cant reccomend it enough, i love it, it has the textbook I use so I can check answers and Maybe even cheat sometimes, but I love it.
Lots of love and hugs from me ˜˜˜˜. To the people complaining about the photo solver thing, don't use that, it worked for me a few times for super complicated problems but it needs to be clearly legible.