All functions are relations but all relations are not functions.
Yes.
concentric circle
If you graph the two functions defined by the two equations of the system, and their graphs are two parallel line, then the system has no solution (there is not a point of intersection).
range
input
Minerals have an unique chemical composition, and Rocks are made up of two or more minerals.
true
True.
True.
true
Chained or nested functions.
true
spilt in two
The domain and range of the composite function depend on both of the functions that make it up.
a chloroplast and a mitochondrion are alike because both make energy from sugar
Presently, the ejected ring theory best describes the origin of moon.