The SLOPE function in Excel is used to calculate the slope of a line given known x and y values. The value of m is the slope of the graph. This is a range of cells of numeric independent values.
Below is the SLOPE Formula in Excel.
Computes the slope and y-intercept values used in a regression equation. The value of m is the slope of the graph. There are a few differences to add best fit line or curve and equation between Excel 20072010 and 2013. Then select month 2s quantities copy them and then paste them inside chart area.