Use a protractor to measure that angle and then convert the angle to a decimal or a fraction using a trig table. The slope of a line characterizes the direction of a line. Slope m yB yA xB xA Slope m y B - y A x B - x A.
It is the change in y for a unit change in x along the line.
How to find slope. Slope can also be used for a line tangent to a curve. Slope m 10 2 7 3 Slope m 10 - 2 7 - 3. The slope of the line is continuously recalculated.