HELP ME OUT PLEASE!!!

Determine which graph shows y as a function of x.

Question and answers are in the attached picture. you so much in advance.

Which expression is rational? 6. , square root two, square root 14, square root 49

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set.a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}