Algebra 2 Unit 3: Quadratics Review

The mini formula we use to find the value of A is _________.

• $a\ =\ \frac{1}{4}p$

• $a\ =\ \frac{p}{4}$

• $a\ =\ -\frac{1}{4p}$

• $a\ =\ \frac{1}{4p}$

Tags

CCSS.HSA.REI.B.3

For the following parabola, please give the VERTEX:

 $y\ =\ 3\left(x-6\right)^2+4$  

(a)  

The A.O.S. for the parabola

 $y\ =\ 3\left(x-6\right)^2+4$  is (a)   .

Write an equation of the parabola with the given characteristics:

Focus: (3, 5)

Vertex: (3, -1)

• 
  

  $y\ =\ \frac{1}{24}\left(x+3\right)^2+1$
  

• $y\ =\ \frac{1}{24}\left(x-3\right)^2-1$

• $y\ =\ -\frac{1}{24}\left(x+3\right)^2-1$

• $y\ =\ -\frac{1}{24}\left(x-3\right)^2-1$

Find the vertex of the parabola if the focus is at (2,4) and the directrix is at y=2

• (2,3)

• (1,4)

• (3,4)

• (2,5)

Tags

CCSS.HSF-IF.C.7A

Which of the following quadratic equations best represents the following data?

• y = 7x² - 3x

• y = 3x² - 2x + 1

• y = 6x² + 3x - 2

• y = 7x² - 3x + 1

• A

• B

• C

• D

What equation best represents this data set?

{(−4, −5), (−3, −8), (−2, −9), (−1, −8), (0, −5), (1, 0.5)}

The scatterplot and table show the weekly profit in dollars earned from the sale of pastries at seven different prices. The data can be modeled by a QUADRATIC function. Which function best models the data?

Tags

AI.9.8.B

What is the y-value when the x-value is 5?

• 18.6
• 19.6
• 17.6
• 16.6

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1