Final answer:
The slope of the line passing through the points (4, -1) and (3, 1) is -2.
Step-by-step explanation:
To find the slope of a line passing through two points, we can use the formula: slope = (y2 - y1) / (x2 - x1).
Given the points (4, -1) and (3,1), we can substitute the coordinates into the formula to find the slope: slope = (-1 - 1) / (4 - 3) = -2 / 1 = -2.
Therefore, the slope of the line passing through these points is -2.