Quadratic Function

Which of the following equations represents a quadratic function?

• a. y = 3 + 2x^2

• b. 2y^2 + 3

• C. Y = 3X -2^2

• d. y = 2^X - 3

The the quadratic function f(x) = x^2 + 2x - 1 expressed in standard form as

• a. f(x) = (x +1)^2 + 1

• b. f(x) = ( x+1 )^2 - 2

• c. f(x) = (x+1 )^2 + 2

• d. f(x) = (x+1)^2 - 1

What is the vertex of the parabola?

• a. (h , k)

• b. (x, y)

• c. origin

• d. (k, y)

What is the graph of quadratic function?

• a. circle

• b. square

• c. parabola

• d. ellipse

The _______ of a quadratic function is the set of all real numbers.

__________ is the turning point of the parabola.