Given two points on the line:
(3, 8) and (-4, 8), then the slope is:
m = (8 - 8)/(3 - (-4)) = 0
So, we have a horizontal line, and its equation is given by:
y = 8.
Then, any two points on the xyplane having y-coordinate = 8 are on the line. For instante:
(0, 8) and (1, 8) are two more points on the line.
