Unit 6: Quadratic Functions Unit Test

Identify the root(s) for the function: $f\left(x\right)=x^2-10x+25$  

•  $x=\pm5$  

•  $x=15\ and\ x=-10$ 

•  $x=-5\ and\ x=20$ 

•  $x=5$  

Which is a zero of the graph?

• (0, 3)

• (-1, 0)

• (0, -1)

• (0, 4)

Determine the zero(s) for the quadratic function: $f\left(x\right)=x^2+11x+24$  

•  $x=-8\ and\ x=3$  

•  $x=8\ and\ x=3$  

•  $x=-8\ and\ x=-3$ 

•  $x=8\ and\ x=-3$  

Identify the root(s) for the function: $f\left(x\right)=3a^2+4a+1$  

•  $x=1\ and\ x\ =\frac{1}{3}$  

• No real solutions

•  $x=-1\ and\ x\ =-\frac{1}{3}$  

•  $x=1\ and\ x\ =-\frac{1}{3}$  

Name the Axis of Symmetry

• x = 1

• x = 0

• y = 1

• y = 0

Does this graph have a Maximum or Minimum?

• Maximum

• Minimum

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

• y = -2
• x = 3
• x = -3
• y = 2

Solve by using the square roots method: $5x^2+1=6$  

• x = 5 and x = -5

• x = 1 or -1

• x = $\pm\sqrt{5}$

• x = 7/5 and x = -7/5

Solve by using the square roots method: $2n^2=-144$  

• ±72

• ± $\sqrt{72}$  

•  $\sqrt{72}$  

•  $\pm i\sqrt{72}$  

•  $±72i$  

For $f\left(x\right)=3\left(x+4\right)^2-2$  , what is the equation of the axis of symmetry of  $m\left(x\right)$  ?

•  $x=4$  

•  $x=-2$  

•  $x=3$  

•  $x=-4$