The table shows the average cost to own a certain car over a period of five years. year 1 2 3 4 5 cost ($) 10,600 7,900 8,000 8,100 7,000 take a look at the scatter plot of the data below and the line of best fit that was drawn. write an equation in slope-intercept form (y = mx + b) for the line of best fit and interpret the slope and y-intercept by stating what the slope and y-intercept are representing in this situation.