Matematika Diketahui f(x) = ax + b, f(-1) = 4, dan f(-3) = -14. Nilai f(-2) adalah ....

zoeyschummulv – March 13, 2023

Diketahui f(x) = ax + b, f(-1) = 4, dan f(-3)
= -14. Nilai f(-2) adalah ....

Penjelasan dengan langkah-langkah:

f(-1) = 4 → -a + b = 4

f(-3) = -14 → -3a + b = -14 –

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2a = 18

a = 9

-a + b = 4

-9 + b = 4

b = 4 - (-9)

b = 13

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f(x) = ax + b

f(x) = 9x + 13

f(-2) = 9(-2) + 13

f(-2) = -18 + 13

f(-2) = -5

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