tolong di jawab pake cara

23.
f(x) = ax + b

f(-1) = -10
-a + b = -10

f(2) = -1
2a + b = -1

-a + b = -10
2a + b = -1
__________-
-3a = -9
a = -9 : (-3) = 3

-a + b = -10
-3 + b = -10
b = -10 + 3 = -7

f(x) = 3x - 7

f(4) = 3(4) - 7
= 12 - 7
= 5 (B)

24.
g(x) = 2x + 4

daerah asal = {-2, -1, 0, 1, 2} >> dimasukkan ke x

g(-2) = 2(-2) + 4
= -4 + 4 = 0

g(-1) = 2(-1) + 4
= -2 + 4 = 2

g(0) = 2(0) + 4
= 0 + 4 = 4

g(1) = 2(1) + 4
= 2 + 4 = 6

g(2) = 2(2) + 4
= 4 + 4 = 8

Daerah hasil = {0, 2, 4, 6, 8}