x-Intercepts and Zeros - Phase III, Week 1

What is the first step for finding the x-intercepts for a quadratic equation?

What is the second step for finding the x-intercepts for a quadratic equation?

What is the third step for finding the x-intercepts for a quadratic equation?

What is the factored form of ? $x^2+x-2=0$  

•  $\left(x+1\right)\left(x+2\right)=0$  

•  $\left(x-1\right)\left(x+2\right)=0$  

•  $\left(x+1\right)\left(x+2\right)=0$  

•  $\left(x-1\right)\left(x-2\right)=0$  

What are the x-intercepts for  $x^2+x-2=0$  ?

• 2

• 1

• -2

• 1

• -0.5

What is another way to say "where a function crosses the x-axis"?

• x-intercept

• zero

• root

• all of these.

• solution

Tags

CCSS.HSF-IF.C.7C

A point on a graph of a quadratic function that has the coordinates (___, 0) is called a...

• x-intercept

• vertex

• maximum

• y-intercept

• minimum

What does it mean to "find the x-intercepts" of a quadratic?

• Plug in 0 and solve the expression.

• Factor then set each factor equal to zero and solve to find x-intercepts

• Set the expression equal to zero and solve

• Factor then set each factor equal to zero and solve to find y-intercepts

What are the zeros of $x^2+9x+14=0$  

• {2, 7}

• {-2, -7}

• {2, -7}

• {-2, 7}

Calculate the x-intercepts of the quadratic function  $x^2-4=0$  

• {-2, 2}

• {0, -2}

• {0, -2}

• {2, 4}