Quiz: 4.1 & 4.2

This is the standard form of a quadratic function:

f ( x ) = ax² + bx + c

• True

• False

• (2,1)

• (-2,1)

• (0,0)

• (-2,-1)

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

• x = -4
• x = 4
• y = 4
• y = -4

What is the vertex?
f(x) = -x² - 4x + 12.

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

Identify A, B, and C if y = 3x² -8 + 5x.

• 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 of the following is a quadratic equation in standard form?

• 3x + 2y = 7

• y = -(x - 4)² + 8

• y = -2x² + 3x + 1

• y = 4x + 9

What is the vertex of f(x) = x² + 4x + 3?

• (2,1)
• (-2,1)
• (0,0)
• (-2,-1)

The axis of symmetry line passes through which point?

• y-intercept
• any random point
• vertex
• symmetrical point for the vertex

What is the formula above primarily used for?

• Finding the axis of symmetry from standard form
• Finding the vertex from vertex form
• Finding the y-intercept from standard form

• Finding the axis of symmetry from vertex form