The formula becomes increasingly useful as the coordinates take on larger values or decimal values. Slope of the line is -12. So the first method to find the value of slope is by using the equation given.
It can also be used to determine the angle of the slope in degrees.
Also you can try this formula my2-y1x2-x1 calculator to find the slope of the line or given coordinates. The slope of the line that contains 5 -3 and -2 3 is -67. It is the ratio of the change in the y-axis to the change in the x-axis. Slope m yB yA xB xA Slope m y B - y A x B - x A.