How i describe the algebraic expression of n+4

Step-by-step explanation:

One way to put that into words would be "4 added to some number".  Another way could be "the sum of some number and 4" or "4 more than some number".  They all mean the same thing.

Equation of other line passing through point (6 , - 11) and parallel to given line is  y = - 23 x + 127 .