alg2 Unit 3 Practice Test

Look at the graph.

What is the parent function of the function graphed?

• f(x)=x²

• f(x)=log x

Look at the table of graphs.
Which graph represents the function $f\left(x\right)=\sqrt{x}$  

• Graph 1

• Graph 2

• Graph 3

• Graph 4

What are the x-intercepts of the function
 $f\left(x\right)=x^2-3x+2$  

• {1, 2}

• {1, -2}

• {-1, 2}

• {-1, -2}

Look at the function. $f\left(x\right)=2x^2-7x+8$ 
What word best describes the type of zeros of the function? 

• Complex

• Whole

• Irrational

• Real

What are the factors of (y⁴ - 16y³) ?

• y³ and (y - 16)

• y³ and (y + 16)

• y³ and (y + 4)

• (y + 4) and (y - 4)

Which of the following is a true statement?

• The x-intercepts of a graphed line are equivalent to the zeros to the equation of the same line.

• The solutions of a function are equivalent to the y-intercepts of the graph of the same line

• The y-intercepts of a graphed line are equivalent to the roots to the equation of the same line.

• The x-intercepts of a graphed line are equivalent to the y-intercepts of a graphed line.

The graph of a function is shown.

What is the domain of the function?

• x > -7

• x < -7

• all real numbers

• all real numbers except 2

Graph of a function is shown.

Which statement is true about the function?

• The range of the function is $\left\{y\in R\ :\ 1\le y\le5\right\}$

• The range of the function is $\left\{y\in R\ :\ 1\le y\le4\right\}$

• The domain of the function is $\left\{x\in R\ :\ 1\le x\le3\right\}$

• The domain of the function is $\left\{x\in R\ :\ 1\le x\le5\right\}$

What is the domain of $f\left(x\right)=\sqrt{2x+4}-5$  

•  $\left\{x\ :\ x\ge-2\right\}$  

•  $\left\{x\ :\ x\ge-5\right\}$  

•  $\left\{x\ :\ x\ne-2\right\}$  

•  $\left\{x\ :\ x\ne-5\right\}$  

What is the range of the following function?

f(x) = 3x - 6

• All real numbers

• $y\ge-6$

• $y\le-6$

• $y>-6$