rachel is diving off the coast of hawaii. her dive is modeled by the function d(x) = 30x - 200 where x represents the number of meters since the dive. what does the -200 mean? what does the 30 represent?

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site