Final answer:
The slope of the line passing through the points (-4, 3) and (-8, 9) is -1.5.
Step-by-step explanation:
The slope of a line passing through two points can be found using the formula:
slope (m) = (y2 - y1) / (x2 - x1)
Plugging in the coordinates of the points (-4, 3) and (-8, 9), the slope is calculated as follows:
m = (9 - 3) / (-8 - (-4)) = 6 / (-4) = -1.5
Therefore, the slope of the line passing through the points (-4, 3) and (-8, 9) is -1.5.