slope

• A slope of zero indicates a horizontal line, while a slope that is undefined indicates a vertical line.
• Slope can be calculated using the formula m = (y2 - y1) / (x2 - x1).
• The slope is the change in y divided by the change in x.
• A positive slope indicates that the line is increasing from left to right, while a negative slope indicates that the line is decreasing.
• The equation y = mx + b represents the standard form of a linear equation where m is the slope and b is the y-intercept.
• To find the gradient of a line from two points, use the formula m = (change in y)/(change in x), where change in x is the difference between the x values of the two points and change in y is the difference between the y values of the two points.