Quadratic Functions

The graph of a quadratic functions is called

• a line

• a hyperbola

• a parabola

• a cubic

Standard form of a quadratic equations

• y = x²

• y = ax² + bx + c

• y = mx + b

• y = x

y = 2x^2 - 3 is a quadratic function.

• true

• false

Which of the following is NOT a quadratic function?

• f(x) = -3x²

• f(x) = -5x - x²

• y = 3x³ - 4x + 5

• y = (x + 5)(x + 3)

What are the red points in the graph called?

• axis of symmetry

• vertex

• parabola

• x-intercepts

What is the equation for the axis of symmetry?

• x = 3

• y = 3

Does this parabola have a minimum or a maximum?

• minimum

• maximum

Determine the values of a, b and c for the quadratic equation: y = 4x² - 8x - 3

• a = 4, b = -8, c = 3

• a = 4, b = -8, c = -3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

The formula x = -b/2a is used to find

• the roots

• the x-value of the vertex

• the y-intercept

• the axis of symmetry

What is the vertex of the quadratic function: y = x² - 6x + 11

• (3, 2)

• (-3, -2)

• (-3, 2)

• (3, -2)