2. Classify the functions

Answer variants:
\(f(\)\(y\)\()\) \(=\) \(9\)\(x\) \(+\) \(6\)
\(f(\)\(y\)\()\) \(=\) \(y\)
\(f(\)\(y\)\()\) \(=\) \(2\)
Sort the functions into their types.
 
Column A
Column B
Identity function
 
Real-valued function
 
Constant function
 
 
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