Question

Diketahui f(x+5) = 2X-3.
Nilai f(-8) adalah...
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Answer 1

Misal x + 5 = p
maka x = p - 5

Penyelesaian
f(x + 5) = 2x - 3
f(p) = 2(p - 5) - 3
f(p) = 2p - 10 - 3
f(p) = 2p - 13
f(x) = 2x - 13

Nilai dari f(-8)
f(-8) = 2(-8) - 13
f(-8) = -16 - 13
f(-8) = -29

Answer 2

Diketahui :
f(x+5) = 2X-3.
Nilai f(-8) adalah...

Jawab:

f(x+5) = 2x- 3
F(-8) ,jadi
f(x+5) = -8
x = -8-5
x = -13
jadi,
f(-8) = 2x-3
= 2(-13)-3
= -26-3
= -29
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