Final answer:
The slope of the line passing through (2, 12) and (4, 20) is 4.
Step-by-step explanation:
To find the slope of a line passing through two points, we can use the formula: slope = (change in y) / (change in x).
Given the points (2, 12) and (4, 20), we can calculate the slope as follows:
slope = (20 - 12) / (4 - 2) = 8 / 2 = 4.
Therefore, the slope of the line passing through (2, 12) and (4, 20) is 4.