19. The graph shows the relationship between the number of months different students practiced boxing and the number of matches they wo Boxing Matches у 21 18 15 12 Number of Matches Won 9 . 3 X 0 2 4 6 8 10 12 Number of Months of Practice Part A: What is the approximate y-intercept of the line of best fit and what does it represent? (5 points) Part B: Write the equation for the line of best fit in the slope-Intercept form and use it to predict the number of matches that could be won afte include the points used to calculate the slope. (5 points)​