The graph shows the amount of money paid when purchasing bags of candy at the zoo: a graph is shown. the x-axis is labeled from 0 to 9. the y-axis is labeled from 0 to 10. four points are shown on the graph on ordered pairs 0, 0 and 1, 2 and 2, 4 and 3, 6. these points are joined by a line. the label on the x-axis is bags of candy. the title on the y-axis is total cost in dollars. what does the point (0, 0) on the graph represent? the cost of one bag of candy the cost of two bags of candy the cost of three bags of candy the cost of zero bags of candy