Quadratics Summative

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Solve the following equation by completing the square: n² - 2n - 3 = 0

SHOW YOUR WORK TO RECEIVE CREDIT.

• x = 3 and -1

• x = 4 and -4

• x = 5 and -3

• x = -3 and 1

If given the equation
y = 3(x + 5)² - 4,
what is the vertex of the parabola?

• (5, -4)
• (-5, -4)
• (-15, -4)
• (15, -4)

Which equation is graphed above?

Which of the following shows
f(x) = x² + 12x - 2
written in vertex form?

• f(x) = (x + 6)² + 142
• f(x) = (x + 6)² - 34
• f(x) = (x + 6)² - 38
• f(x) = (x + 6)² + 34

What is another word that describes the zeroes of a quadratic function?  

• y-intercepts
• vertex
• x-intercepts
• maximum

• x = -4 and 2

• x = -2 and 4

• x = -16

• x = -4

What is the vertex for
f(x)=4(x-2)² + 3

• (-2, 3)
• (2,-3)
• (4,3)
• (2,3)

• (0, 1)

• (0, -5)

• ( -2, 3)

• (1, 0)

• y = 9x² - 15x + 21

• y = -3x² - 75x - 4

• y = 9x² + 90x + 221

• y = -3x² - 30x - 79