Answer:
Therefore, Option 3rd is correct that is
which is required equation of a line.
Explanation:
We have given a point through which line is passing that is (7,-2) and slope is also given which is -3
We have a general equation of line which is

Here,

And
on substituting the values in the given formula for equation of a line we will get


Therefore, Option 3rd is correct that is
which is required equation of a line.