Slope
lastmod 2023-02-02created 2014-09-037 edits
Slope (North Korean standard language: bitaldo) is a number that expresses how steeply a straight line is inclined.
Related formulas
In a Cartesian coordinate system, the slope of a line can be expressed algebraically as follows. (m : slope of the line, Δx : change in x, Δy : change in y)
In geometry, the slope is equal to the value of tan θ.
In a plane containing the X and Y axes, the slope of a line is usually denoted by the letter m and expressed as follows.
Calculating the slope
Straight_line_definition.svg.png
Considering a line placed in a Cartesian coordinate system as in the graph on the right, the slope m can be calculated as follows.
This slope is also equal to the tangent of the angle Φ that the line makes where it crosses the x-axis.