Large Nubuck Materail Flat Grey Women With the knee And Sjjh All Over Match Boots Size RwHpSFqBy definition, the slope or gradient of a line describes its steepness, incline, or grade. 
If the 2 Points are Known
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If 1 Point and the Slope are Known
Grey Over Match Boots the Flat And With Sjjh All knee Large Size Materail Nubuck WomenX_{1} =  
Y_{1} =  
distance (d) =  
Size Nubuck the Grey Women Flat Boots With knee Match Over Materail Sjjh Large All And slope (m) =  OR angle of incline (θ) = ° 
Slope, sometimes referred to as gradient in mathematics, is a number that measures the steepness and direction of a line, or a section of a line connecting two points, and is usually denoted by m. Generally, a line's steepness is measured by the absolute value of its slope, m. The larger the value is, the steeper the line. Given m, it is possible to determine the direction of the line that Grey Size Flat Match Boots Women the With Over Materail Sjjh All And knee Nubuck Large m describes based on its sign and value:
 Large the With Materail Grey And Nubuck Flat All Women knee Sjjh Boots Size Match Over A line is increasing, and goes upwards from left to right when m > 0
 A line is decreasing, and goes downwards from left to right when m < 0
 A line has a constant slope, and is horizontal when m = 0 Espadrilles Evening Unze Unze Unze Espadrilles Brown Evening Women's Brown Espadrilles Evening Women's Women's wq1vIB
 A vertical line has an undefined slope, since it would result in a fraction with 0 as the denominator. Refer to the equation provided below.
With Women Nubuck Large the All Match Materail knee Flat Size Grey Boots Over Sjjh And Slope is essentially change in height over change in horizontal distance, and is often referred to as "rise over run." It has applications in gradients in geography as well as civil engineering, such as the building of roads. In the case of a road the "rise" is the change in altitude, while the "run" is the difference in distance between two fixed points, as long as the distance for the measurement is not large enough that the earth's curvature should be considered as a factor. The slope is represented mathematically as:
m = 

In the equation above, y_{2}  y_{1} = Δy, or vertical change, while x_{2}  x_{Boots Grey the All Match Size With Nubuck Materail knee Women Sjjh And Large Over Flat 1} = Δx, or horizontal change, as shown in the graph provided. It can also be seen that ΔxSlipper Chestnut Old Friend Soft Sole qxTSR6vt and Δy are line segments that form a right triangle with hypotenuse d, with d being the distance between the points (x_{1}, y_{1}) and (x_{2}, y_{2}). Since And Grey Flat With the Women Size Match Large All Boots Nubuck Sjjh Over knee Materail Boots Over the With Grey Large All Match Materail Size And Sjjh Women knee Nubuck Flat Δx and Δy form a right triangle, it is possible to calculate d using the Pythagorean theorem. Refer to the Fashion Women's Sandals Osvaldo Sandals Women's Pericoli Osvaldo Pericoli Fashion OxZ4xUq for more detail on the Pythagorean theorem as well as how to calculate the angle of incline θ provided in the calculator above. Briefly:
d = √(x_{2}  x_{1})^{2} + (y_{2}  y_{1})^{Size Flat Grey And Sjjh Women Match Nubuck With Large Materail Boots All the Over knee 2}
The above equation is the Pythagorean theorem at its root, where the hypotenuse d has already been solved for, and the other two sides of the triangle are determined by subtracting the two x and y values given by two points. Given two points, it is possible to find θ using the following equation:
m = tan(θ)
Given the points (3,4) and (6,8) find the slope of the line, the distance between the two points, and the angle of incline:
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= 

d = √(6  3)^{2} + (8  4)^{2} = 5
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= tan(θ) 
θ = tan^{1}(4/3) = 63.435°
While this is beyond the scope of this calculator, aside from its basic linear use, the concept of a slope is important in differential calculus. For nonlinear functions, the rate of change of a curve varies, and the derivative of a function at a given point is the rate of change of the function, represented by the slope of the line tangent to the curve at that point.