A2 - Unit 4 Test Review

Write the equation of this quadratic function in standard form. Notice the y intercept at -3.

 $y\ =$  

•  $y\ =\ 2x^2\ +8x\ -3$  

•  $y\ =\ -2x^2\ -8x\ -3$  

•  $y\ =\ x^2\ +\ 8x\ -3$  
  

•  $y\ =-2\ x^2+\ 8x\ -3$  

Write the equation of the quadratic function in standard form? Note: a = 1

• $f\left(x\right)\ =\ x^2\ \ +\ 4x\ \ +\ 0$

• $f\left(x\right)\ =\ x^2\ -4x\ +\ 0$
  

• $f\left(x\right)\ =\ x^2\ -8x\ +\ 0$
  

• $f\left(x\right)\ =\ x^2\ +\ 8x\ +\ 0$
  

6i(3/2 + 2i) + 4(3/4 - 5i)

• -15 -11i

• 15 - 11i

• 9 + 11i

• -9 -11i

(-7 + 9i) + (2 - 10i)

• -5 + i

• -5 - i

• -9 + 1

• 9 - i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.B.4

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

Tags

CCSS.HSN.CN.A.2

The expression (2 + 3i)² is equal to

• -5
• -5 + 12i
• 13
• 13 + 12i

Tags

CCSS.HSN.CN.C.8

(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.2

Simplify: 
(10+ 15i) - (48 - 30i)

• 58 - 45i
• 58 - 15i
• -38 - 15i
• -38 + 45i

Tags

CCSS.HSN.CN.A.2

(-7+6i)²

• 49+36i

• 85

• 13-84i

• 13+84i

Tags

CCSS.HSN.CN.C.8

Three points on a quadratic function were used to set up a system of three equations in three variables to determine the coefficients and constant term of the function. this system is shown below. Solve the system to determine the values of a, b,c.

a- b + c = 6

a + b+ c = -4

7a + 3b + c = 0

• a= 4, b = 5, c = -1

• a= -1.3, b = 5, c = -2

• a= 2, b = -5, c = -1

• a= 2.333, b = -5, c = -1.333