How do you know if y=3x+2 is a function?

1 Answer
Anirudh E.
Jul 4, 2017

It's not.

Explanation:

#y=3x+2# is not a function. Rather, it is just a regular linear equation. However, #f(x)=3x+2# is a function, because it contains "#f(x)#."

So, in general, if it contains "#y#," then you are safe in assuming that it is an equation. If it contains "#f(x)#," then you are safe in assuming that it is a function.

I hope that helps!

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