I attached a picture of what I have so far and a picture of the part I'm trying to do. I have a bunch of undefined dimensions and I'm not sure on what I need to do next. I tried looking up youtube and googling for this part already, but I couldn't find anything on it.
Select the left most, vertical, blue line.
CTRL click the origin.
Choose Vertical, or Coincident.
It looks like you just need to be "connected" to something. A dimension would work as well, but I think a relationship would work well in this case.
Actually I just solved it! I forgot to include the 1.125" at the top. Then I deleted some weird coincidences around the origins and use the far left point to line it up with the origin.