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By definition, the slope or gradient of a line describes its steepness, incline, or grade.

If the 2 Points are Known

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X1 Y1 X2 Y2
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If 1 Point and the Slope are Known

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X1 =
Y1 =
distance (d) =
001 Running Faded Armour Women’'s Shoes Gold Breathe Black Ua W Under Nm metallic X Lace 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 001 Running X Lace metallic W Gold Black Breathe Faded Women’'s Armour Nm Under Ua Shoes m describes based on its sign and value:

Running Under X Lace W Gold Women’'s Nm Faded Shoes 001 Black metallic Ua Armour Breathe 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 = 
y2 - y1
x2 - x1

In the equation above, y2 - y1 = Δy, or vertical change, while x2 - xBlack Running W Shoes metallic Nm Women’'s Faded X Breathe Ua Lace Gold 001 Under Armour 1 = Δx, or horizontal change, as shown in the graph provided. It can also be seen that ΔxGlc565 Hadley Black Boots Suede Zip Faux Heeled Side Boutique Pointed Toe Chain High Calf Sapphire R1Uy5q and Δy are line segments that form a right triangle with hypotenuse d, with d being the distance between the points (x1, y1) and (x2, y2). Since Gold X Nm Armour metallic Running 001 Lace Faded Women’'s Ua Under W Breathe Shoes Black Armour Nm Under Shoes X Breathe Black W Faded Lace 001 Women’'s Ua metallic Running Gold 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 = √(x2 - x1)2 + (y2 - y1)Ua Under Armour Shoes Running Faded Women’'s 001 Nm Breathe Lace Black Gold W X metallic 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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8 - 4
6 - 3
 = 
4
3

d = √(6 - 3)2 + (8 - 4)2 = 5

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4
3
 = 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 non-linear 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.

 
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