Need again asap! math people only. will give brainliest, ton of points only for the right answer. the graph shows the height of a tire's air valve y, in inches, above or below the center of the tire, for a given number of seconds, x. how many degrees does the valve move per second? actually use the right calculations, no guessing, and explain because i am stupid. don't just give a wrong answer for points . answer options: 9 degrees 18 degrees 60 degrees 120 degrees