Writing Equations of Quadratic Functions

What are the key features used to write the equation of a parabola?

• Roots and vertex

• Axis of symmetry and roots

• Intercepts and roots

• Vertex and axis of symmetry

In vertex form, what does the 'a' represent?

• The x-coordinate of the vertex

• The axis of symmetry

• The y-coordinate of the vertex

• Whether the parabola is concave up or down

If a parabola is concave up, what value is assigned to 'a' in vertex form?

• 2

• 1

• 0

• -1

In factored form, what do the 'r' values represent?

• The roots of the function

• The x-coordinates of the vertex

• The axis of symmetry

• The y-coordinates of the vertex

What is the factored form of a quadratic function with roots at x = -2 and x = 1?

• f(x) = (x + 2)(x - 1)

• f(x) = (x - 2)(x + 1)

• f(x) = (x + 2)(x + 1)

• f(x) = (x - 2)(x - 1)

If a quadratic function is concave down, what value is assigned to 'a' in factored form?

• 0

• -1

• 1

• 2

What form does Miss Pierce prefer for writing quadratic equations?

• Factored form

• Vertex form

• Standard form

• Intercept form

What is the vertex form of a quadratic function with a vertex at (4, -11)?

• f(x) = (x - 4)^2 + 11

• f(x) = (x + 4)^2 + 11

• f(x) = (x - 4)^2 - 11

• f(x) = (x + 4)^2 - 11

How do you determine the axis of symmetry from a quadratic function in vertex form?

• By finding the intercepts

• By finding the roots

• By finding the x-coordinate of the vertex

• By finding the y-coordinate of the vertex

What is the axis of symmetry for the quadratic function with roots at x = -2 and x = 10?

• x = -2

• x = 6

• x = 10

• x = 4