# Is y=1 a linear function?

Nov 6, 2016

Yes, it is linear.

#### Explanation:

There are five conditions which must be met in order for an equation or function to be linear.

1) No variable can have an exponent other than the understood $+ 1$.
2) No term can have more tan one variable.
3) No variable can be part of the denominator of a fraction.
4) No variable can be inside absolute value lines.
5) No variable can be part of a radicand.

Since $y = 1$ meets all these conditions, it is linear.