Q2 Math 9 Reviewer

It is an inequality that contains a polynomial of degree two and can be written in any of the following forms: ax2+bx+c>0, ax2+bx+c<0, ax2+bx+c≥0 or ax2+bx+c≤0.

• Linear Inequality

• Polynomial Inequality

• Quadratic Inequality

• None of these

Which of the following is an example of a Quadratic Inequality?

• 12>x+4

• x²+7x<12

• 2x²-4x=-3

• 3x²+4x=0

What are the factors of x²+5x+6?

• (x+1)(x+6)

• (x+2)(x+3)

• (x+3)(x+3)

• (x+4)(x+1)

The 3 intervals of the quadratic inequality x²+5x+6>0 are x<-3, -3<x<-2 and ___.

• x>-2

• x≥-2

• x<-2

• x≤-2

A relationship between variables as one variable decreases the other variable increases and vice versa.

• combined variation

• direct variation

• inverse variation

• joint variation

A relationship between three variables where one variable varies directly as the product of two or more variables.

• combined variation

• direct variation

• inverse variation

• joint variation

Which of the following is/are key phrases for DIRECT VARIATION?

• varies directly as

• is directly proportional to

• is proportional to

• All of these

A more complex relationship between three variables where one variable varies directly as one variable and varies inversely as another.

• combined variation

• direct variation

• inverse variation

• joint variation

A relationship between variables as one variable increases, the other variable also increases.

• combined variation

• direct variation

• inverse variation

• joint variation

A type of variation that occurs whenever a situation produces pairs of numbers whose product is constant.

• combined variation

• direct variation

• inverse variation

• joint variation