For no solution, the two lines have to never intersect, which means they have to be parallel lines. In other words, no solution will satisfy both equation. For infinitely many solutions, the two lines have to overlap each other, which means one equation has to be a multiple of the other equations.
[joint] the site of the junction or union of two or more bones of the body; its primary function is to provide motion and flexibility to the frame of the body. Some are immovable, such as the sutures where segments of bone are fused together in the skull.
The head of the femur articulates with the os coxa (pelvis) at the  acetabulum. The acetabulum is the rounded socket that the head of  the femur fits into. It also allows sl â¦ iding of the pelvic bones and  rotation. This joint is a synovial joint and is an example of a  ball-and-socket joint. 5 people found this useful.