Find the slope of the line passing through the points (-5, 9) and (-5,1)
The slope of a line passing through two points (x1, y1) and (x2, y2) is given by the formula:
m = (y2 - y1) / (x2 - x1)
In this case, the points are (-5, 9) and (-5, 1), so:
m = (1 - 9) / (-5 - (-5))
m = (-8) / 0
Since the denominator is 0, the slope is undefined. This means that the line passing through these two points is a vertical line.