A relation has pairs of numbers. A function is a special relation where for each input there is one and only one output.
Exactly how it sounds take each color and do one part dust and one part essence of each color so it will equal to one part of each for a full potion bottle
There are approx 6.4 million topologically different convex dodecahedron, plus concave one. Each one of these will have several nets.
There are four kinds of relations in ordered pairs: one to one (each x value is unique and has a unique y value associated with it) one to many (each x value has multiple possible y values) many to one (each y value has multiple possible x values) many to many (x and y values can be repeated and are not unique) See the related link for more helpful information.
Cumulative voting, which permits shareholders to cast one vote for each share of common stock owned in any combination, is prevalent.