Open Response on Quadratic Function

What do we call the turning point of a quadratic?

• parabola

• vertex

• graph

• point

The standard form of a quadratic function is

• y = ax² + bx + c

• a(x - h)² + k

• y - y₁ = m(x - x₁)

• Ax + By = C

If a is positive in the quadratic function, which way does the parabola open?

• up

• down

• left

• right

Identify a, b, and c if y = 3x² + 5x - 8

• a = 3, b = 5, c = - 8

• a = 3, b = - 8, c = 5

• a = 3x², b = 5x,

  c = - 8

• a = 3x² , b = - 8,

  c = 5x

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

• 1

• 3

• 2

• 5

• 4

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

• (3,2)

• (-3,-2)

• (-3,2)

• (3,-2)

What is the axis of symmetry?
f(x) = x² - 8x + 15.

• x = -4

• x = 4

• y = 4

• y = -4

What is the range? y = -x² - 4x + 12.

A parabola has a vertex at (6, 5) and passes through (10, -11). Which equation represents this parabola in vertex form?

• -11 = a(10 - 6)² + 5

• y = -(10 - h)² + k

• y = -(x - 6)² + 5

• y = (x - 6)² + 5