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f(-2) = -2(-2) + 4 = 4 + 4 = 8
f(-1) = -2(-1) + 4 = 2 + 4 = 6
f(0) = -2(0) + 4 = 0 + 4 = 4
f(1) = -2(1) + 4 = -2 + 4 = 2
Jadi, grafiknya berbentuk titik di titik (-2, 8) , (-1, 6) , (0, 4) dan (1, 2) seperti dalam lampiran.