Take the coaxial cable from the wall and connect it the 'satellite/cable in' or 'antenna in' port on the cable box/satellite receiver. Many boxes and receivers will have similar language. The key word is 'in'.
Run a second coaxial cable from the cable box or satellite receiver to the television. In this picture, the receiver says, "Out to TV." Many boxes and receivers will have similar language. The key word is 'out'.