Pertidaksamaan dan Fungsi Kuadrat

Selesaikan pertidaksamaan linier: 3x - 5 < 7.

• x > 4

• x < 4

• x ≤ 4

• x = 4

Gambarkan grafik fungsi kuadrat: f(x) = x^2 - 4x + 3.

• The graph of the function f(x) = x^2 - 4x + 3 is a parabola opening upwards with vertex at (2, 1), x-intercepts at (1, 0) and (3, 0), and y-intercept at (0, 3).

• The vertex is at (0, 3) and opens downwards.

• The graph is a straight line with no intercepts.

• The x-intercepts are at (0, 0) and (4, 0).

Tentukan akar-akar dari fungsi kuadrat: f(x) = 2x^2 - 8.

• x = 2, x = -2

• x = 3, x = -3

• x = 1, x = -1

• x = 4, x = -4

Gunakan metode substitusi untuk menyelesaikan sistem: x + y = 10 dan 2x - y = 3.

• x = 4, y = 6

• x = 13/3, y = 17/3

• x = 10, y = 0

• x = 5, y = 5

Terapkan sifat pertidaksamaan: Jika 2x + 3 > 5, berapa nilai x?

• x > 3

• x = 1

• x > 1

• x < 1

Interpretasikan solusi dari pertidaksamaan: 4x - 1 ≤ 3 dalam konteks.

• x < 1

• x ≤ 1

• x = 1

• x ≥ 1

Selesaikan pertidaksamaan linier: 5 - 2x ≥ 1.

• x < 1

• x > 2

• x ≤ 2

• x = 2

Analisis grafik fungsi kuadrat: f(x) = -x^2 + 6x - 8.

• Vertex: (2, 0)

• X-intercepts: (1, 0) and (5, 0)

• Vertex: (3, 1), X-intercepts: (2, 0) and (4, 0), Y-intercept: (0, -8)

• Y-intercept: (0, 8)

Tentukan akar-akar dari fungsi kuadrat: f(x) = x^2 + 2x - 15.

• 1, -15

• 3, -5

• 2, -7

• 4, -4

Gunakan metode substitusi untuk menyelesaikan: 3x + 4y = 12 dan x - 2y = 1.

• (1, 2)

• (3, 0)

• (2.8, 0.9)

• (0, 3)