Math 9

1.         It is a variation when one quantity increases the other quantity decreases and vice – versa.

• Direct

• Inverse

• Joint

• Combined

A quantity whose value is not changing.

• constant

• proportion

• ratio

• variable

A quantity whose value is changing.

• constant

• ratio

• proportion

• variable

It is a variation where the quantity increases and decreases together.

• direct

• inverse

• joint

• combined

It is a variation is the product of two or more variables.

• direct

• inverse

• joint

• combined

In the statement, a varies directly as quantity b, then the equation is _____.

• a=kb

• a=k/b

• k=ab

• a=kB

In the statement, a varies jointly as b and c, then the equation is _____

• a=bc

• a=ka/b

• a=kbc

• a=k/bc

In the statement, a varies inversely as quantity b, then the equation is _____

• a=kb

• a=k/b

• a=kB

• a=k/B

Which of the following is an example of direct variation?

• (2,3),(3,4)(5,6),(4,3)

• (1,2),(2,3),(3,2),(2,1)

• (1,3),(2,6),(3,9),(4,12)

• (12,4),(9,5),(6,6),(3,7)

Which of the following is an example of inverse variation?

• (2,3),(3,4),(5,6),(4,3)

• (1,2),(2,3),(3,2),(2,1)

• (1,3),(2,6),(3,9),(4,12)

• (12,4),(9,5),(6,6),(3,7)