Nomor 1

f(x) = 2x - 4

f(-2) = 2(-2) - 4 = -16

f(-1) = 2(-1) - 4 = -6

f(0) = 2(0) - 4 = 4

f(2) = 2(2) - 4 = 0

f(4) = 2(4) - 4 = 4

f(6) = 2(6) - 4 = 8

Bayangan = {-16, -6, 4, 0, 4, 8}

Nomor 2

h(x) = 5 - 3x

bilangan Real antara 1-4

h(1) = 5 - 3(1) = 2

h(2) = 5 - 3(2) = -1

h(3) = 5 - 3(4) = -7

h(4) = 5 - 4(4) = -11

Range = {2, -1, -7, -11}

Nomor 3

g(x) = -x² + x

g(5) = -(5)² + (5)

g(5) = 30

Bayangan -5 = 30

Nomor 4

f(x) = x - 2

f(a - 2)

Mencari nilai a

f(a - 2) = x - 2

a = -2 + 2

a = 0

nilai f(a - 2) = (0 - 2) - 2

= (-2)-2

= 4

Nomor 5

f(-5) = 2(-5) - 3 = -10 - 3 = -13

Nomor 6

f(-1) = -1 - 2(-1)

= -1 + 2

= 1

f(0) = -1 - 2(0)

= -1 - 0

= -1

f(1) = -1 - 2(1)

= -1 - 2

= -3

Nomor 7

g(x) = 2x - x²

f(a) = 10

nilai a =

10a

2a - x²

______-

8a - x²

x = x + x × x√8

x^3 = 8

x = 3√8

x = 2

maka, nilai a = 2

Nomor 8

f(x) = ax + b

f(5) = 16

f(-2) = 2

Maka :

f(5) = 16

5a + b = 16

f(-2) = 2

-2a + b = 2

= 5a + b = 16

-2a + b = 2

___________-

7a = 14

a = 14/7

a = 2

= 5(7) + b = 16

= 35 + b = 16

b = 16 - 35

b = -19

Nomor 9

Domain = {-3, -1, 0, 2, 5, 7}

f(-3) = -3(-3) = 9

f(-1) = -3(-1) = 3

f(0) = 0

f(2) = -3(2) = -6

f(5) = -3(5) = -15

f(7) = -3(7) = -21

Range = {9, 3, 0, -6, -5, -21}