B07- FUNCTION QUIZZ 1- 23RD MAY 2023

• 4

• 6

• 10

• 16

True or False: A graph represents a function if and only if each vertical line intersects the graph at most once.

• TRUE

• FALSE

Is this table a function or not a function? 

• Function
• Not a Function

What is the domain of  $y=\sqrt{2-x}$  ?

• The domain are the set of all real numbers where  $x\le2$  

• The domain are the set of all real numbers where $x\ne2$  

• The domain are the set of all real numbers where  $x\ge2$  

• The domain are the set of all real numbers where  $x<2$  

Is this mapping a function or not a function? 

• Function
• Not a Function

What's the domain of the function?

• $\left(-\infty,\ -3\right)\cup\left(-3,\ \infty\right)$

• $\left(-\infty,\ \infty\right)$

• $\left(-\infty,\ 1\right)\cup\left(1,\ \infty\right)$

• $\left(-\infty,\ 3\right)\cup\left(3,\ \infty\right)$

What is the range of the function?

• -7≤x≤6
• -7<x<6
• -8<y<2
• -8≤y≤2

Find the domain of

 $f\left(x\right)=x^{2\ }+4x-12$  

•  $\left(-\infty,\ \infty\right)$  

•  $\left(0,\ 12\right)$  

•  $\left(-\infty,\ -2\right)\cup\left(6,\ \infty\right)$  

•  $\left(-\infty,\ -6\right)\cup\left(2,\ \infty\right)$  

Select all  x-values are NOT in the domain of  $f\left(x\right)\ =\ \frac{x+2}{x\left(x^2+4\right)\left(x^2-25\right)}$  

•  $x=2$  

•  $x=-2$  

•  $x=5$  

•  $x=-5$  

•  $x=0$  

Find the domain of the function.

 $f\left(x\right)=\frac{x+3}{5x}$  

•  $\left(-\infty,\ -3\right)∪\left(-3,\ \infty\right)$  

•  $\left(-\infty,5\right)\ ∪\ \ \left(5,\infty\right)$  

•  $\left(-\infty,0\right)∪\left(0,\infty\right)$  

•  $\left(-\infty,\ -1\right)∪\left(-1,\infty\right)$