Pls tolong jawab kk kkyang paling penting nomor 3, 4 sama 5
Jawab:
Penjelasan dengan langkah-langkah :
2. 3, 6, 12, 24 ( geometri)
r = 6/3 = 2
U⁸ = ar(n-¹) = 3.2⁸-¹ = 3.2⁷ = 3.128 = 384
3. Persamaan garis melalui
titik (-2,0) // y = 3x + 2
dik :
y = 3x + 2, m = 3
Persamaan garis :
y – y¹ = m (x – x¹)
y – 0 = 3 (x + 2)
y = 3x + 6
4. Tentukan gradien :
m = ( y² – y¹) / (x² – x¹)
= 1 + 4 / -7 – 3
= 5/-10 = -1/2
5. f(x) = 4x + 4
daerah asal {-2,-1,0,1,2}
daerah hasil : {-4,0,4,8,12}
f(x) = 4x + 4
f(-2) = 4.-2 + 4 = -8 + 4 = -4
f(-1) = 4.-1 + 4 = -4 + 4 = 0
f(0) = 4.0 + 4 = 4
f(1) = 4.1 + 4 = 4 + 4 = 8
f(2) = 4.2 + 4 = 8 + 4 = 12
Pasangan berurutan:
{(-2,-4),(-1,0),(0,4),(1,8),(2,12)}