Final answer:
The slope of the line passing through the points (3, 1) and (9, 2) is calculated using the slope formula and is 1/6, which is option A.
Step-by-step explanation:
The question asks for the slope of the line that passes through the points (3, 1) and (9, 2). To find the slope (m), the formula m = (y2 - y1) / (x2 - x1) is used.
Applying the points to the formula provides:
m = (2 - 1) / (9 - 3) = 1 / 6
Therefore, the slope of the line that contains the points (3, 1) and (9, 2) is 1/6, which corresponds to option A.