7. Let sets: A = {a, b, c } and B = {x, y, z)and/(a)- Find a) The domain of f b) The codomain of f c) The image of a and b d) The preimages of x and z For a-c, determine whether function/: A-+ B is a one-to-one or onto function, or both (bijective/one-to- one correspondence). Justify your answer a) A-a, b, c and B-{x. y. z; and (a)-y,jb) x,f(c) = z. c)A a, b, c, d and B- {x. y. z and Ma)-z,(b) d) A-a, b and B - {x. y. z) and f(a)-x,f(b) 1. Suppose g: AB and f: B- C, where A (a, b, c, d), B-{1,2,3,4), C., {2, 3, 6, 8), g-(a, 2), (b, 1), (c, 3), (d, 2); and f, 8), (2, 3), Find: and a) fo 2. Let fand g be functions from the set of integers to set of integers defined by f(r)x2 and g (x)-x+ 1 Find