Time complexity using recurrence method

In T(n) = k.n + T(n-1)
What does this K actully represents??

@a19JE0093 kn represents the time that would be need to perform the work in splitting the sol for n-1 and 1 and then merging them back (basically all the work to be done in this step).
k is just a factor, it does not need to mean any thing specifically.
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