yang pinter mtk tolong no 11 12 sama caraya

Ini jawabannya
[tex]f(x) = px + q \\ \\ f( - 2) = - 2p + q = 14 \\ f(3) \: \: \: \: = 3p + q = - 1 \\ .................................... - \\ - 5p = 15 \\ p = - 3 \\ 3p + q = - 1 \\ 3( - 3) + q = - 1 \\ - 9 + q = - 1 \\ q = 8[/tex]

11. 872000 = 800000 + (800000 × 12/100 × n)
872000 = 800000 + (96000 × n)
872000 - 800000 = 96000 × n
72000 = 96000 × n
n = 72000/96000
n = 3/4 tahun

12. Dik:
f(x) = px + q
f(-2) = 14
f(3) = -1

Dit: p & q

Jawab:
f(-2) = p(-2) + q
14 = -2p + q...(1)

f(3) = p(3) + q
-1 = 3p + q...(2)

-2p + q = 14
3p + q = -1
_________ _
-5p = 15
p = 15/-5
p = -3

3(-3) + q = -1
-9 + q = -1
q = -1 + 9
q = 8