Diketahui fungsi f (x) = 12x + 24 a) tentukan bayangan dari -3 dan 2 b) Jika f (a) = - 36 tentukan nilai a

f(x) = 12x + 24

a) f(-3) = 12(-3) + 24 = - 36 + 24 = - 12
f(2) = 12(2) + 24 = 24 + 24 = 48

b) f(a) = 12a + 24 = - 36
12a = - 36 - 24
12a = - 60
a = - 5

f(x) = 12x + 24

a) y = f(x) = 12x + 24
f(-3) = 12(-3) + 24
= -36 + 24
= -12

y = f(x) = 12x + 24
f(2) = 12(2) + 24
= 24 + 24
= 48

b) f(a) = 12a + 24
-36 = 12a + 24
12a = 24 + 36
12a = 60
a = 60/12
a = 5