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

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18