Zeros Pt 2: Other representations lesson

Zeros Pt 2: Other representations

Multiple Select

Which of the following are related the word zero ?

• Root

• y intercept

• factor

• increasing

• solution

X intercepts to Zeros

The x corrdinates are your zeros. x=3 and x=5

Solutions to Zeros

• Set each factor = to 0 and solve for x

• (x-3)=0.....x=3 (solution)

• (x-5)=0.....x=5 (solution)

• The zeros are at x=3 and x=5

Factors to Zeros/Roots

• Rewrite the function/equation in factored form. Each factor is in ( ).

• Set each factor = to 0

• Solve for x

• The x value is a zero and a root.

Multiple Choice

Find the zeros of

 $\left(x-3\right)\left(x+7\right)=0$  

•  $x=3\ and\ x\ =7$  

•  $x=-3\ and\ x=7$  

•  $x=3\ and\ x=-7$  

•  $x=-3\ and\ x=-7$  

• The x intercepts are (-2,0) and (3,0)

• The zeros are at x=-2 and x=3

• The solutions are x=-2 or x=3

• The roots are x=-2 and x=3

• The factors are (x+2) and (x-3)