PrOblem # 1: Determine which shaded region below best represents the domain of the function 1 NW) = U\"- (B) y (C) (D) Problem #2: Determine which graph below corresponds to the function f(x, y) = sin(x - y). (A) (B) (C) (D) (E . . . . . . . . . ." . f. . . .' . . .. ;. . . .'. . . . : . . . . . . .. .:.. as . . . .;. . . .;. . a4 . . . . . .'. . . . ; . .. . .'s