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.
Top 10 unbelievable historical concurrencies. The cranium is the upper bony structure of the skull, including everything except for the mandible, or jawbone. The cranium protects the brain and head, and supports facial structures such as the eyes and ears, holding them in the proper place to receive sensory information most efficiently. Animals that have a skull are collectively known as craniates. The cranium is not a single bone, but many.