When is a line chart appropriate? 1) The -axis is the year ranging from 2000 to 2015, the -axis is the amount of rainfall. 2) The -axis shows a movie rating: G, PG, PG-13, R, and NC-17. The -axis is the number of movies released in 2015 of a given rating. 3) The -axis is a color: black, blue, green, red, silver, or white. The -axis is the number of cars of a given color