Find the slope of the line passing through the points (9,9) and (-9,9)
We can use the formula for the slope of a line passing through two points (x1, y1) and (x2, y2):
slope = (y2 - y1) / (x2 - x1)
Using the points (9,9) and (-9,9), we get:
slope = (9 - 9) / (-9 - 9)
slope = 0 / -18
slope = 0
Therefore, the slope of the line passing through the points (9,9) and (-9,9) is 0.