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. (G1 - ifal 2016) Os pontos de um plano cartesiano de coordenadas (2, 2) e (4, −2) pertencem ao gráfico de uma função 𝑓: ℝ → ℝ, definida por 𝑓(𝑥) = 𝑎𝑥 + 𝑏. Qual o valor de 𝑎 + 𝑏? a) 0. b) 2. c) 4. d) 6. e) 8.
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