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Verified answer
F(x) = ax - 6f(2) = 1, maka : 2a - 6 = 1
2a = 1 + 6
2a = 7
a = 7/2
f(x) = (7/2)x - 6
f(4) = (7/2).4 - 6
= 14 - 6
= 8
2a = 1 + 6
2a = 7
a = 7/2
f(x) = (7/2)x - 6
f(4) = (7/2).4 - 6
= 14 - 6
= 8✔