In: Computer Science
The accompanying figure illustrates various binary relations from R to R. Which are functions? For those that are functions, which are onto? Which are one-to-one?
1) OPTIONS A,C AND D ARE FUNCTIONS SINCE THEY HAVE SINGLE Y FOR SINGLE X
2) OPTIONS C AND D ARE ONTO SINCE THEY COVER ALL Y VALUES IN GRAPH FROM -INF TO INF
3) OPTIONS A AND C ARE ONE TO ONE SINCE THEY ARE MONOTONIACAL IN NATURE