Slope is a measure of the steepness of a line. It is calculated by dividing the change in the y-coordinate (vertical) by the change in the x-coordinate (horizontal) between two points on the line.
Slope is represented by the letter "m" in the slope-intercept form of a linear equation, y = mx + b. It can also be expressed as a fraction, rise over run, or as a decimal.
A positive slope indicates that the line is increasing from left to right, while a negative slope indicates that the line is decreasing. A slope of 0 means that the line is horizontal.
The tangent of an angle is equal to the slope of the line that forms that angle with the x-axis. This means that the tangent of an angle can be used to calculate the slope of a line.
To calculate the slope of a line using two points, you can use the formula (y2 - y1)/(x2 - x1). This means finding the difference between the y-coordinates of the two points and dividing it by the difference between the x-coordinates.