During the spring and summer, a concession stand at a community Little League baseball game field sells soft drinks and other refreshments. To prepare for the season, the concession owner refers to the previous year’s files, in which he had recorded the daily soft drink sales (in gallons) and the average daily temperature (in degrees Fahrenheit). The data is shown in the table below. t, Temperature g, Soft Drink Sales (gal) 52 35 55 42 61 50 66 53 72 66 75 68 77 72 84 80 90 84 94 91 97 95 If the data points (t, g) are plotted on a graph, it will look like the following graph: Using the coordinates of two points (84, 80) and (74, 65), determine the slope of the line of best fit.