The slope of a line passing through the points (x1, y1) and (x2, y2) is given by:
Slope = (y2 - y1) / (x2 - x1)
For the points (2, 5) and (-2, 9), the slope is:
Slope = (9 - 5) / (-2 - 2) = 4 / -4 = -1
So, the slope of the line passing through (2, 5) and (-2, 9) is -1.