Question

Fungsi f didefinisikan dengan rumus f(x) = 2x + 5. Jika f (-4) = a dan f (b) = 1, maka nilai a+b adalah...

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Answer 1

F(x) = 2x + 5

f(-4) = 2(-4) + 5
a = -8 + 5
a = -3

f(b) = 2(b) + 5
1 = 2b + 5
1 - 5 = 2b
-4 = 2b
b = -4/2
b = -2

a + b = -3 + (-2)
a + b = -3 - 2
a + b = -5

Answer 2

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