Solving Quadratic Inequalities by graphing

What is the solution to

 $x^2+8x+7>0$  ?

•  $x>-7\ or\ x>-1$  
  

•  $x<-7\ or\ x>-1$  
  

•  $-7<x<-1$  

• All real numbers

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

What is the solution to

 $x^2+10x+9<0\ ?$  

•  $-9<x<-1$  

•  $x<-5\ or\ x>-16$  

•  $x<-9\ or\ x>-1$  

•  $x>-9\ or\ x<-1$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

What is the solution to

 $x^2-11x+28\ge0\ ?$  

•  $x>-2.5$  

•  $4<x<7$  

•  $4\le x\le7$  

•  $x\le4\ or\ x\ge7$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

What is the solution to

 $\frac{1}{2}x^2-x-4>0\ ?$  

•  $x<-2\ or\ x>4$  

•  $x\le-2\ or\ x\ge4$  

•  $-2<x<4$  

•  $-2\le x\le4$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

CCSS.HSA.APR.A.1

What is the solution to

 $-x^2-4x+12\ge0\ ?$  

•  $-6<x<2$  

•  $-6\le x\le2$  

•  $x<-6\ or\ x>2$  

•  $x\le-6\ or\ x\ge2$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

What is the solution to

 $-x^2-x+3\ge0\ ?$  

•  $-3<x<1$  

•  $-3\le x\le1$  

•  $x<-3\ or\ x>1$  

•  $x\le-3\ or\ x\ge1$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3