Math 9 | Second Monthly Exam

It is an inequality that contains a polynomial of degree 2.

Which of the following is a QUADRATIC INEQUALITY?

•  $2x>5$  

•  $x^2-x<3x$  

•  $x^2+5=6x$  

•  $x^3\ne5x-8$  

Which of the following are the properties of Inequality?

Select 2 answers.

• A product is positive when the factors are both postive, or both negative.

• A product is positive when one factor is postive and the other is negative.

• A product is negative when the factors are both postive, or both negative.

• A product is negative when one factor is postive and the other is negative.

Solve the quadratic inequality using the Cae Exploration Method.

 $x^2+3x-10>0$  

•  $x<5\ or\ x>2$  

•  $x<-5\ or\ x>2$  

•  $x<5\ or\ x>-2$  

•  $x<-5\ or\ x>-2$  

Solve the quadratic inequality using the Case Exploration Method.

 $x^2-x-2\le0$  

•  $-1\le x\le2$  

•  $1\le x\le2$  

•  $1\le x\le-2$  

•  $-1\le x\le-2$  

Solve the quadratic inequality using the Case Exploration Method.

 $x^2-3x<4$  

•  $1<x<4$  

•  $-1<x<4$  

•  $1<x<-4$  

•  $-1<x<-4$  

Which of the following quadratic inequalities satisfies the property of inequality below?

"A product is positive when the factors are both postive, or both negative."

•  $x^2-3x<4$  

•  $x^2+3x-10>0$  

•  $x^{2\ }-x-2=0$  

It is known as the second-degree function.

Which of the following is not a quadratic function?

• $y=x^2-4x+4$

• $y=x^2-7$

• $y=2^{x^2+1}$

• $y=-2x^2+8x-3$

 $y=x^2-4x+4$  

What form is being represented by the given quadratic function?