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jadi,
h(4) = 4p + q = -28 ..... 1
h(-5) = -5p + q = 26 .... 2
2 - 1
4p + q = -28
-5p + q = 26 -
9p = - 54
p = - 6 ...... 3
substisusikan 3 ke 2
4 × (- 6) + q = - 28
- 24 + q = - 28
q = - 28 + 24
q = - 4
maka rumusnya , h(x) = - 6x - 4
jadi jawabannya, h(-12) = -6(-12) - 4
= 72 - 4 = 68
h(-5) = 26
Rumus fungsinya
4p + q = -28
-5p + q = 26
------------------ -
9p = -54
p = -6
-6(4) + q = -28
q = -4, maka
Fungsi h(x) = -6x - 4
h(-12) = -6(-12) - 4
h(-12) = 68