Quadratic Function Basics

The graph of a quadratic function is called

• a line
• a hyperbola
• a parabola
• a cubic

Which of the following is NOT a quadratic function

• f(x) = -3x²
• f(x) = -5x - x²
• y = 3x³ - 4x + 5
• A = pi.r²

Identify a in the quadratic equation:

x ² + 16x + 64=0

• 2

• 1

• 16

• 64

Identify b of the quadratic equation:

x ² + 64=0

• 0

• 1

• -1

• 64

Identify c of the quadratic equation:

x ² + 16x + 64=0

• 2

• 1

• 16

• 64

ax²+bx+c=0  is the standard form of a quadratic equation.

• True
• False

• 70 feet

• 95 feet

• 149 feet

• -16 feet

Choose all that are concave up:

• 
• 
• 
• 
• 

what is the y-intercept of the parabola?

• y =1

• y = -7

• y = 3

• y = 7

Identify b of the quadratic equation:

2x ² − 4x − 2= 0

• 2

• 4

• -4

• -2