Quadratic Functions and Equations Unit Review

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)

What is the vertex of y=x²+4x+3?

• (2,1)
• (-2,1)
• (0,0)
• (-2,-1)

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

Tags

CCSS.HSF-IF.C.7A

Write y = x² + 4x - 1 in vertex form. Hint: find the axis of symmetry which will be the value of "h". Then take that answer and place it into the original function to find the value of "k". Once you know "h' and "k", the you write the function in vertex form.

• y = (x - 2)² + 5

• y = (x + 2)² - 5

• y = (x + 2)² - 1

• y = (x +2)² + 3

Convert the equation y= (x+8)²+7 into standard form. Hint: use FOIL method to multiply (x +8)(x +8). Then take your answer and combine like terms. As a result, your answer should be in standard form: y = ax² + bx + c

• y= x²+16x+71

• y= x²+8x+71

• y= x²+16x+64

• y= x²+15x+7

Change to Standard Form:

y = (x - 1)(x - 8)

Hint: Use FOIL method. Make sure you combine like terms.

• y = x² + 9x + 8

• y = x² + 9x - 8

• y = x² - 9x - 8

• y = x² - 9x + 8

What is the vertex of the function y=(x+2)²-7?

• (-2, -7)
• (-2, 7)
• (2, 7)
• (2, -7)

What is the y-intercept of the function y=-2x²+8x-6?

• (0, 8)
• (0, -6)
• (0, 2)
• (0, 0)

Tags

CCSS.HSF-IF.C.7A

What piece of information does c identify in the following equation?
y=ax²+bx+c

• Zeroes
• Axis of Symmetry
• Direction
• y-intercept

Factor x² + 6x + 9 .

• (x+3)(x+3)

• (x+4)(x+5)

• (x-3)(x-3)

• Not factorable