Namely y ( 0 ) = 2 , y ( − 2.7 ) = 2 , y ( π ) = 2 , ... No matter what value of x is input , the output is `` 2 '' .
Namely , y ( 0 ) = 4 , y ( − 2.7 ) = 4 , y ( π ) = 4 , ... No matter what value of x is input , the output is `` 4 '' .