Tlong bntuin no 16,, plihan ganda no 16 a. -12 b. -3 c. 9 d. 11 Mksh atas bntuannya

MAAF JAWABAN DIFOTO SALAH...
AKU RALAT DISINI YA

f(x) = ax + b
f(2) = a.2 + b = 3
f(-3) = a.(-3) + b = 13

shg didapat
2a + b = 3
- 3a + b = 13
----------------- --
5a = - 10
a = - 2

2a + b = 3
2(-2) + b = 3
- 4 + b = 3
b = 3 + 4
b = 7

jadi - a + b = -(-2) + 7
= 2 +7
= 9

opsi C
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