y = f1(x) = 2x^2 - 5x y = f5(x) = 2x^2 - 5x + 1 y = f3(x) =

y = f1(x) = 2x^2 - 5x y = f5(x) = 2x^2 - 5x + 1 y = f3(x) = (1/2)x^2 + 2 y = f2(x) = -(1/2)x^2 + 2x y = f4(x) = -(1/3)x^2 - 1 y = f6(x) = -x^2 - 4x - 3 y = f7(x) = (1/2)x^2 + 2x + 2 y = f9(x) = 2x^2 - 3x + 2 y = f8(x) = -x^2 + 4x - 4 y = f10(x) = -(1/2)x^2 - 2x - 3 Gambar 3.6 Grafik-grafik fungsi kuadrat f(x) = ax^2 + bx + c dengan a =/= 0. Bagaimana letak titik balik grafik fungsi kuadrat f(x) = ax^2 + bx + c (di kanan, pada, atau di kiri sumbu Y) jika: a. nilai a > 0 dan b > 0; b. nilai a > 0 dan b < 0; c. nilai b = 0; d. nilai a < 0 dan b > 0; e. nilai a < 0 dan b < 0.