Ch4: Quadratic Equations

How many intercepts does this graph have?

• 0

• 1

• 2

• Not enough information

What are the x intercepts of this graphed function?

• -4, 2

• 4, -2

• 0, -3

• -1, -3.25

What are the x intercepts of the graphed equation??

• 2,1

• 2

• 1

• There are none

What are the roots of the quadratic function  $y=0.5x^2+3.5x+6$  

• -0.125

• 4 and 3

• -4 and -3

• 6

Factor completely: $x^2-20x+75$  

• (x-5)(x+15)

• (x+5)(x+15)

• (x+5)(x-15)

• (x-5)(x-15)

Factor completely: $-4x^2+68x-120$  

• -4(x-2)(x-15)

• -4(x+2)(x+15)

• -4(x+2)(x-15)

• -4(x-2)(x+15)

Solve  $-8x^2+120x+432$  

• 18, -3

• -18, 3

•  $\frac{9}{4}$  ,  $-\frac{3}{8}$  

• -144, 24

Determine the roots of the quadratic equation  $-5x^2+55x=50$  

• -10, -1

• -50, -5

• 10, 1

• 2, 1/5 

Determine the roots of the quadratic equation  $144x^2-324=0$  

•  $\frac{4}{9}$  and  $-\frac{4}{9}$  

•  $\frac{3}{2}$  and  $-\frac{3}{2}$  

•  $\frac{9}{4}$  and  $-\frac{9}{4}$  

•  $\frac{2}{3}$  and  $-\frac{2}{3}$  

Solve (x+4)(x-9)=0

• 4 and -9

• 4 and 9

• -4 and 9

• -4 and -9