well, from what little i can see in those pics.. the cable is not adjusted correctly, the caliper is also Not adjusted correctly, the caliper pivot cups/cones are not installed correctly, and the bike, in general, needs better care.
there's a strong possibility that the disc is contaminated with something too, but there is no pic of the disc, so who knows what it looks like, other than you, eh?

prepare to get comments about your JAK brakes, since most people trash talk low end bikes and their inexpensive components.

what type of pads did you install? Organic/Resin, Semi-Metallic, or Metallic?
what brand/type of disc is involved?
is there a bike Co-Op near you? go see them, and ask for help.

the pivot cups/cones should be installed so that the dark parts touch the caliper mount ears, and the light colored parts touch the frame mount/bracket and allen screw head/washer... the allen head end is correct, the frame mount end is reversed..
that will make aligning the calipers easier, but won't dramatically effect braking...

youtube has dozens of videos on the correct way to adjust disc brakes on bikes, but you may still want to hit up any local co-op for help.
we work cheap, and do this sort of thing for a living.