Final answer:
The slope of the line passing through the ordered pairs (2, -1) and (4, 2) is 1.5.
Step-by-step explanation:
The slope of the line passing through the ordered pairs (2, -1) and (4, 2) can be found using the slope formula, which is:
slope = (y2 - y1) / (x2 - x1)
Substituting the values from the given ordered pairs into the formula, we get:
slope = (2 - (-1)) / (4 - 2) = 3 / 2 = 1.5
Therefore, the slope of the line is 1.5.