Height of the plant growth is given in a table, where it is in linear pattern,
 
Week \(1\) \(2\) \(3\) \(4\)
Height of the plant in \(cm\) 38 \(x\) 46 \(y\)
                                                                                     
Find the missing terms \(x\) and \(y\) and constant difference.
 
\(x = \)  
 
\(y = \)       
 
Constant difference \(=\)