Final answer:
The slope of the line passing through the points (-1, 2) and (2, 3) is 1/3.
Step-by-step explanation:
To find the slope of the line passing through the points (-1, 2) and (2, 3), we can use the formula: slope = (change in y) / (change in x).
The change in y is 3 - 2 = 1, and the change in x is 2 - (-1) = 3. So the slope is 1/3.
Therefore, the correct answer is A) 1/3.