How do you calculate the slope of a line given two points?

To calculate the slope of a line given two points, you need to use the following formula:

slope = (y2 - y1) / (x2 - x1)

In this formula, (x1, y1) and (x2, y2) are the coordinates of the two points on the line.

To use this formula, subtract the y-coordinates (the second coordinate) of the two points and divide the result by the difference between the x-coordinates (the first coordinate) of the two points. This will give you the slope of the line. If the slope is positive, the line is increasing from left to right; if the slope is negative, the line is decreasing from left to right. If the slope is zero, the line is horizontal, and if the slope is undefined, the line is vertical.