A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

A 'Line of Best Fit' is a straight line that best represents the data points in a scatter plot, indicating the trend of the data.

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of the two points.

A positive slope indicates that as one variable increases, the other variable also increases.

A negative slope indicates that as one variable increases, the other variable decreases.

A trend line helps to summarize the relationship between the variables and can be used to make predictions.

You can use the trend line to estimate the value of one variable based on the value of another variable.