A variable is an English letter we take for unknown values or quantities.We are given expression :
.
In the above given expression we have x and y English letters, because we don't know the values of them.
And we have some constant in front of those English letters.
We have
in front of xy.
The coefficients are the constant numbers in front of variables.
Therefore,
is the coefficient of the term
.
Therefore, correct option is a. 6/7.