Finding Zeros of a Function Lesson

Finding Zeros of a Function Lesson

Multiple Select

Identify all of the locations where the function crosses or touches the x axis.

• $x=5$

• $x=-3$

• $x=2$

• $All\ of\ them$

Multiple Choice

Which of the following is not a zero of the function

• $x=-3$

• $x=-6$

• $x=3$

Multiple Select

Check all that are zeros of the function

•  $-100$  

•  $-3$  

•  $-2$  

•  $2$  

•  $4$  

Finding Zeros From a Function or it's Factored Form (DESMOS)

• Type either the function, equation, or factored form into Desmos

• Move cursor to points where the graph crosses the x axis

Multiple Select

Identify the zeros for the function

 $f\left(x\right)=x^3-6x^2+4x+4$  

•  $x=-1$  

•  $x=-.534$  

•  $x=1.483$  

•  $x=3.63$  

•  $x=5.051$  

Poll

Find one of the zeros for

 $f\left(x\right)=\left(2x-3\right)\left(x+4\right)$  

•  $x=\frac{2}{3}$  

•  $x=-4$  

Fill in the Blank

List one of the zeros for the equation  $x\left(x-7\right)\left(3x+4\right)\left(x+8\right)=0$  ; x=_______

Multiple Choice

Which is NOT a zero of the function

 $f\left(x\right)=-3x^4-5x^3-x^2+x$  ?

•  $x=-1$  

•  $x=0$  

•  $x=.333$