Quadratic Functions Introduction

What is the y-intercept of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

Which of the following is NOT a quadratic function

• f(x) = -3x²

• f(x) = -5x - 3x²

• f(x) = 3x - 4x² + 5

• f(x) = 3x + 5

Identify a of the following quadratic function:
 y = 2x ² − 4x − 2

• 2

• 4

• -4

• -2

Identify a of the following quadratic function:
y = −x ² + 18x − 75

• 18

• 1

• -75

• -1

Identify a of the following quadratic function:
y = x ²

• 1

• -1

• 0

• 2

Identify c of the following quadratic function:
y = x ²

• 1

• -1

• 0

• 2

Does this parabola have a maximum or minimum?

• Maximum

• Minimum

Quadratic equations take the shape of a _______ when graphed.

• U

• straight line

• wavey line/snaked

• circle/elliptical

The shape formed by the graph of a quadratic function is referred to as what?

• linear

• quadratic

• cubic

• parabola

Which of the following is the vertex of the graph?

• (2, 0)

• (-2, 0)

• (0, 4)

• (-1, 3)