Solving Quadratics by Graphing

What are the roots of this graph?

• -2 and 3

• -1/2 and -6

• -2 and -6

• 3 and -6

What is another word that describes the zeroes of a quadratic function?  

• y-intercepts
• vertex
• x-intercepts
• maximum

How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

How many solutions does this function have?

• two

• one

• infinite solutions

• no solutions

Solve for x:
 $y=2x^2+7x-9$  

•  $\left\{-1,\ \frac{9}{2}\right\}$  

•  $\left\{-\frac{2}{9},1\right\}$  

•  $\left\{-\frac{9}{2},\ 1\right\}$  

•  $\left\{-1,\ \frac{2}{9}\right\}$