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f(x) = 4x - 1
f(-5) = 4(-5) - 1
= -20 - 1
= -21
f(-3) = 4(-3) - 1
= -12- 1
= - 13
f(-1) = 4(-1) - 1
= -4-1
= -5
f(2) = 4(2) - 1
= 8 - 1
= 7
f(4) = 4(4) -1
= 16 - 1
= 15
f(10) = 4(10) -1
= 40 -1
= 39
Hp = { -21 , -13 , -5 , 7 , 15 , 39}
soal A
f(x) = -2x + 3
f(x) ⇒ -2x + 3 = - 1
-2x = - 1 - 3
-2x =- 4
x = -4/-2
x = 2
soal B
f(x) ⇒ -2x + 3 = 1
-2x = 1 - 3
-2x =- 2
x = -2/-2
x = 1