Which could be an equation of the trend line shown in the graph? The graph of x and y axis with the titles Total Distance (mi) and Total Time (min) respectively. The range of x axis is zero to five by increment of one. The range of the y axis is zero to forty by increment of five. On both axis every alternate tick marks are labeled. The points plotted on the graphs are (2, 22), (2.5, 28), (3, 34), (3.5, 34), and (4, 40). The line started from the point (0, 7) and passing through the point (4, 40).