Below is the table of values of a function. Write the output when the input is n .

Output  =  4n

Thanks. How about when its

Input: 1,2,3,4,n

output: 11,15,19,23?

How  about

Output  =   4n  + 7   ????

Here's how this is obtained

Slope  =     [ 15 - 11] /  [ 2 - 1 ]   =   4/ 1 =  4

So...using the slope and any  (input, ouput)  point - I'll use (1, 11) -  we have

Output  =  4 ( n - 1) + 11

Output  = 4n - 4 + 11

Output  = 4n + 7