OR angle of incline th. Luckily we dont have to calculate the slope manually. Slope of a horizontal line.
Those two points of a line in general will have coordinates x1y1 and x2y2 for points 1 and 2 respectively.
To calculate the slope of a line you need only two points from that line x1 y1 and x2 y2. Subtract the values in parentheses to get 2-5. To find the slope you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points. To calculate the slope of a line you need only two points from that line x1 y1 and x2 y2.