linear trendline formula explained

A linear trendline is a line drawn over the data points of a graph that best fits the data points and is used to measure the rate of change of the data over time. The formula for a linear trendline is y=mx+b, where "m" is the slope of the trendline and "b" is the intercept (the point at which the line crosses the y-axis). The slope of the trendline is calculated by finding the rise over the run, which is the change in y divided by the change in x. The intercept is found by knowing that the line crosses the y-axis at some point, and plugging in that point's x and y values into the linear equation.