Jack and kane buy an equal number of comic books every month. the following equation shows the number of comic books, y, that jack has after x months: y = 2x + 15 the following graph shows the number of comic books, y, that kane has after x months: graph shows months on x axis and number of comic books on y axis. the scale on x axis is shown from 0 to 5 at increments of 1. the scale on y axis is shown from 0 to 21 at increments of 3. the title of the graph is kanes comic books. a straight line is shown which joins the ordered pair 0, 9 and 4, 21 after 2 months, how many more comic books does jack have than kane? 1 2 4 7