Question
Determine whether the equation represents y as a function of x.
|y| = 4 - x
If I plug in 5, then I get -1, but it also means 1. Does that mean y has 2 values which means that it is not a function?
|y| = 4 - x
If I plug in 5, then I get -1, but it also means 1. Does that mean y has 2 values which means that it is not a function?
Answers
drwls
You are correct.
There are two y's for each x. y is not a function of x.
There are two y's for each x. y is not a function of x.