How is slope of a straight line calculated?

Answer 1

The slope of a straight line is calculated by taking the difference in the y-coordinates (rise) of two points on the line and dividing it by the difference in the x-coordinates (run) of the same two points. This is expressed mathematically as ( m = \frac{y_2 - y_1}{x_2 - x_1} ), where ( m ) is the slope, and ( (x_1, y_1) ) and ( (x_2, y_2) ) are the coordinates of the two points. A positive slope indicates the line rises from left to right, while a negative slope indicates it falls. If the line is horizontal, the slope is zero; if vertical, the slope is undefined.