The coaches of a group of debate teams answered a survey about hours of debate, team practice and number of team wins. The graph shows the results of this survey. Which equation best represents the line of best fit?
y = 7x + 5
y = -2x+1
y = 4x + 2
y = 4x + 4
Based on the graph, the line of best fit seems to have a positive slope and a y-intercept around -2. Therefore, the equation that best represents the line of best fit is:
y = 4x + 4