Answer: The required equation of the line in standard form is

Step-by-step explanation: We are given to write the standard form of the line that passes through the points (-1, -3) and (2, 1).
We know that
the slope of a line passing through the points (a, b) and (c, d) is given by

So, the slope of the given line is

Since the line passes through the point (2, 1), so its equation will be

Thus, the required equation of the line in standard form is
