Quadratic Graphs Review

What does factored form of a quadractic function quickly help us determine about its graph? Ex :  $f\left(x\right)=\left(x-3\right)\left(x+2\right)$  

• Its y-intercepts

• Its x-intercepts

• Its vertex

What does standard form of a quadractic function quickly help us determine about its graph? Ex :  $f\left(x\right)=x^2-4x+12$  

• Its y-intercept

• Its x-intercepts

• Its vertex

What are the x-intercepts for the graph of the function:  $f\left(x\right)=\left(x-4\right)\left(x+2\right)$  

• (-4, 0) and (2, 0)

• (4, 0) and (2, 0)

• (0, -8)  

• (4, 0) and (-2, 0)

Where does the graph of  $f\left(x\right)=x^2-x\ -\ 12$  cross the y-axis?

• (0, 12)

• (0, -12)

• (4, 0), (-3, 0)

• (-4, 0), (3, 0)

What is the factored form of the equation for the graph?

• $f\left(x\right)=\left(x+1\right)\left(x+3\right)$

• $f\left(x\right)=\left(x-1\right)\left(x-3\right)$

• $f\left(x\right)=x^2+4x+3$

• $f\left(x\right)=x^2-4x+3$

What is the vertex coordinate of 

 $y=(x+2)(x–4)$  

What is the y-intercept

 $y=(x–1)(x–3)$  

What is the y-intercept

 $y=-(x+3)\left(x+9\right)$  

What are the x-intercepts

 $y=(x–1)(x–3)$  

• (0,3)     (0,1)

• (1,0)     (3,0)

• (0,-3)     (0,-1)

• (-1,0)     (-3,0)

What are the x-intercepts

 $y=-(x–1)(x+4)$  

• (0,4)     (0,-1)

• (-4,0)     (1,0)

• (0,-4)     (0,1)

• (-1,0)     (4,0)