Question #1 A function k whose domain is the set of positive integers is defined as k(1) = 4 and k(n) = k/n - 1) – 2.
Function k was evaluated for several numbers. Which of the following are true?
Select each correct answer.
k(6) = 3
k(2) = 2
k(-1) = -4
k(3) = 0
k(0) = -2

Bwould be the answer

I  dont  know much about vertexes but i know to solve this function you need to use foil method and then corresponmd the vertex with the actual coordinates, hope i !

(6,1)(5,4)slope = (4 - 1) / (5 - 6) = 3/-1 = -3y = mx + bslope(m) = -3use either of ur , = 6 and y = 1now sub and find b, the y int1 = -3(6) + b1 = -18 + b1 + 18 = b19 = bso ur equation is : y = -3x + we need it in standard formy = -3x + 3x to both sides3x + y = 19 < == standard form