How do you know if (4,5) (3, -2) (-2,5) (4,7) is a function?
1 Answer
Aug 14, 2016
As soon as there is a choice for y, it is NOT a function.
Explanation:
It is NOT a function.
Notice that when
In a function, for each x-value there must be only ONE y-value.
As soon as there is a choice for y, it is NOT a function.
