Exam Review 3rd quarter

If  $h\left(a\right)=3-2a$  , 

find  $h\left(-3\right)$  

•  $12$ 

•  $-2$ 

•  $-3$ 

•  $9$  

Solve the following inequality. $-5\left(1-4a\right)>-5$  

•  $a>0$  

•  $a<5$  

•  $a<0$ 

•  $a>5$ 

A parabola has a vertex at $\left(-3,\ 2\right)$ . Where is the axis of symmetry?

•  $y=-2$ 

•  $x=3$  

•  $x=-3$  

•  $y=2$  

What are the x-intercepts of $f\left(x\right)=\left(x-10\right)\left(x+10\right)$ ? 

•  $10$ 

•  $\left(10,\ 0\right)\ and\ \left(-10,\ 0\right)$ 

•  $\left(0,\ 10\right)\ and\ \left(0,\ -10\right)$ 

•  $0$ 

The equation y = x²  is graphed.  Based on this graph, what are the roots of the equation x²  = 0?

• 0
• -1 and 1
• 2 and 0
• y

What are the zeros of the quadratic function given?

 $y\ =x^2-2x-15$  

•  $\left\{-15,\ -2\right\}$ 
  

•  $\left\{-3,\ 5\right\}$ 
  

•  $\left\{3,\ -5\right\}$ 
  

•  $\left\{-16,\ 1\right\}$ 
  

Factor this expression:  $9x^2-49y^2$  

•  $\left(3x+7y\right)\left(3x-7y\right)$  

•  $\left(3x+7y\right)\left(3x+7y\right)$  

•  $\left(3x-7y\right)\left(3x-7y\right)$ 
  

• Prime

Factor:
 $x^{2\ }+7x-30$  

•  $\left(x+10\right)\left(x-7\right)$ 

•  $\left(x-10\right)\left(x+3\right)$ 

•  $\left(x+10\right)\left(x+3\right)$  

•  $\left(x+10\right)\left(x-3\right)$ 

What is the axis of symmetry for this graph?

• 
  

  $y=2$

• $x=2$

• $x=0$

• $y=0$

Which quadratic is the narrowest graph?

• $y=3x^2$

• $y=4x^2$

• $y=2x^2$

• $y=\frac{1}{2}x^2$