Step 2: - After that we have to put two points on a line. Because we are using two sets of order pair both the coordinates having values ‘x’ and ‘y’ and you have to used a subscript to distinguish between the two values ‘x’ and ‘y’. Know More About :- Matrix Multiplication Calculator How do you Find the Circumference of a Circle Now we will see How to Find Slope of a Line, Step 3: - When a line has a negative slope then it goes down from left to right.