Fungsi & Persamaan Kuadratik / Quadratic Function & Equation

Tentukan nilai a , b , c bagi ungkapan kuadratik berikut:

Determine the value of a , b , c in the quadratic expression:

x²+3x

• a = 1 , b = 3 , c = 1

• a = 0 , b = 3 , c = 0

• a = 1 , b = 3 , c = 0

• a = 1 , b = -3 , c = 0

Apakah nama titik hijau tersebut?

What are the green dots called?

• paksi simetri/axis of symmetry

• puncak/vertex

• parabola

• punca-punca atau pintasan-x / roots or x-intercepts

Apakah paksi simetri bagi graf di atas?

What is the axis of symmetry of the graph above?

• x = 1

• x = -1 , x = 3

• (1,-4)

• f(x) = x²-2x-3

Apakah pintasan-y bagi: / What is the y-intercept for:

f(x)= x²-6x+8

• -6

• 1

• -8

• 8

Adakah graf ini mempunyai titik maksimum atau titik minimum?

Does this graph have a maximum or a minimum?

• maksimum/maximum

• minimum

Apakah titik minimum?

What is the minimum point?

• (2,3)

• (3,2)

• (3,0)

• (0,2)

Selesaikan persamaan/Solve the equation:

x(2x+5)=3

• (2x + 5)(x + 3) = 0
  x = -5/2,  x = -3

• (2x + 1)(x + 3) = 0
  x = -0.5, x = -3

• (x + 3)(2x - 1) = 0
  x = -3, x = 0.5

• (2x -1)(x + 3) = 0
  x = 0.5, x = -3

Bentukkan persamaan kuadratik
Form a quadratic equation 
(x + 2)² = 2x + 7

• x² + 6x + 7 = 0

• x² + 4x - 3 = 0

• x² + 2x - 3 = 0

• x² + 6x - 3 = 0

Apakah fungsi kuadratik bagi graf di atas? / What is the quadratic function for graph above?

• f(x)= x²+2x+3

• f(x) = -x²+2x+3

• f(x)= -x²-2x+3

• f(x)= -x²-2x-3

Apakah faktor bagi

What are the factors of

x²+3x-40

• (x+10)(x-4)
• (x+8)(x-5)
• (x+20)(x-2)
• (x+1)(x-3)