Algebra 350 Unit 2 Make-Up

What is the vertex of the quadratic for this equation?

 $f\left(x\right)=\left(x-7\right)^2+5$  

•  $\left(+5,+7\right)$  

•  $\left(+7,+5\right)$  

•  $\left(-7,5\right)$  

•  $\left(-11,9\right)$  

For this problem, the vertex is HIGHER than the other point. Vertex

 $\left(-8,19\right)$    and another point is  $\left(5,7\right)$ .  Which statement is true.

• The graph is a smile and the a-term is negative.
  
  

• The graph is a smile and the a-term is positive.

• The graph is a frown and the a-term is negative.
  
  

• The graph is a frown and the a-term is positive.

 $y=3x^2-7x+12$  

What do we know about the function?

• It contains the point  (0,3) and is concave up.

• It contains the point  (0,12)  and (1, 8)

• It contains the point  $\left(0,-7\right)$   and is concave up.

• It is impossible from looking at the graph of determining any points on the graph.

 $y=x^2+6x+9$  

What is the vertex of the graph above?

•  $\left(0,9\right)$  

•  $\left(0,-9\right)$  

•  $\left(3,0\right)$  

•  $\left(-3,0\right)$  

What is the factored quadratic equation in the following graph?

• ( x+ 2)(x + 6) = y
• x² - 8x + 12 = y
• (x - 2)(x - 6) = y
• (x - 4)(x + 4) = y

Tags

CCSS.HSF-IF.C.7A

 $y=2\left(x-1\right)\left(x-9\right)$  

What is the vertex for the equation above?

•  $\left(2,1\right)$  

•  $\left(5,-32\right)$  

•  $\left(5,9\right)$  

•  $\left(9,2\right)$  

 $x^2-4x-21=0$  

Solve this equation by factoring:

•  $x=-3,\ x=+7$  

•  $x=3,\ \ x=7$  

•  $x=-3,\ \ \ x=\ -7$  

•  $x=7$  

 $\left(4x+11\right)\left(3x-5\right)=0$  

is the factored form of the equation.  The two answers are   $x=-\frac{11}{4}$    and

 $\left(7+3i\right)+\left(2-7i\right)+\left(+3+i\right)=$  

Add the following complex numbers:

•  $9-3i$  

•  $12-3i$  

•  $6-3i$  

•  $6-i$  

 $-7-5i$  

What is the complex conjugate of the number above?

•  $7+5i$  

•  $-7-5i$  

•  $-7+5i$  

•  $7-5i$