Tolong ya.. pake cara dikumpulin besok.. kalo gk nanti dihukum pliiss

16.
f(x) = 2x - 5
f(-1) = 2(-1) - 5 = -2 - 5 = -7
f(6) = 2(6) - 5 = 12 - 5 = 7

jawaban D

17.
f(x) = ax + b
f(1) = a + b = 5
f(5) = 5a + b = -3

a + b = 5
5a + b = -3
--------------------- -
-4a = 8
a = 8 / (-4)
a = -2

a + b = 5
-2 + b = 5
b = 5 + 2
b = 7

f(x) = -2x + 7

jawaban D

18.
{a, b} , n = 2
{1, 2, 3} , n = 3

banyaknya pemetaan yang mungkin = 3² = 9

jawaban A