tolong kerjain yang nomor dua ya... tapi bagian B C sama D aja ya..

b) g(4) = m.4 -9
3 = 4m -9
3 + 9 = 4m
12 = 4 m
m = 3
bentuk fungsi :
g(1) = 3.1 -9
= 3 - 9 = -6
g(2) = 3.2 -9 = 6 - 9 = -3
g(3) = 3.3 - 9 = 9 - 9 = 0
g(4) = 3.4 - 9 = 12 - 9 = 3
jadi fungsi : (1,-6) , (2,-3), (3 , 0), (4 , 3)
c) fungsi g(-4)
g(-4) = 3. -4 - 9 = -12 - 9 = -21
d) g(a) = 21
g(a) = m. a - 9
21 = 3 . a - 9
21 = 3a - 9
21 + 9 = 3 a
30 = 3a
a = 30 / 3
a = 10