PRE-ASSESSMENT_1Q

 It is a polynomial equation of degree two that can be written in the form  $ax^2+bx+c=0$ , where  $a$  , $b$  , and  $c$  are real numbers and  $a\ne0$  .

• Linear Equation

• Linear Inequality

• Quadratic Equation

• Quadratic Inequality

Which of the following is a quadratic equation?

• $9x-3=2$

• $3=-15-2x$

• $13x=8$

• $2x\left(x-8\right)=16$

In the quadratic equation  $5x^2+14x-3=0$  , which is the quadratic term?

•  $14x$  

•  $5x^2$  

•  $0$  

•  $-3$  

Which among the formulas can be used to solve quadratic equation?

•  $x=\pi r^2$  

•  $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$  

•  $x=a_1+(n−1)d$  

•  $x=\frac{bh}{2}$  

Which is NOT included in the group?

• Pythagorean Theorem

• Factoring

• Completing the Squares

• Extracting Square roots

How many real roots does the quadratics equation 

 $x^2+5x+7=0$   have?

• 0

• 1

• 2

• 3

Which of the following mathematics statements is a quadratic inequality?

• $n^2+3n+2=0$

• $7h+12<0$

• $2s^2-3s-2>0$

• $t^2+8t+15=0$

Which of the following shows the interval notation of the solution set  $-7\le x\le-1$  ?

• 
• 
• 
• 

Which of the following represent a quadratic function?

• $y=2^x-3$

• $2y^2+3=x$

• $y=3x-2^2$

• $y=3+2x^2$

The zeros of the quadratic function described by the graph above is ____.

• 1,3

• -1,3

• 1,-3

• -1,-3