What does something have to be inorder to be considered a function.
I'm not talking about the verticle line test or somethng to verify, im saying in words. like can it not be negative or somehting?
2 answers
I did it further down.
generally speaking, if for any x you pick a unique value of y is determined by your equation, then the relation is a function
e.g., y = x^2 is a function.
any x you choose yields only one y value
but
x = y^2 is NOT a function because x = 9 yields 2 values of y, namely ±3
e.g., y = x^2 is a function.
any x you choose yields only one y value
but
x = y^2 is NOT a function because x = 9 yields 2 values of y, namely ±3
1 answer