Proportional and non-proportional relationships

Proportional and non-proportional Relationships

Tables 

Multiple Choice

A Ratio is:

• A formula based on numbers.

• A comparison of part to part.

• Values in an equation.

• Numbers found in groups.

Ratio

A ratio demonstrates a mathematical relationship between two quantities, and can be represented as a fraction, two numbers joined by a colon, or two numbers joined by the word “to.”

Multiple Choice

If a baseball team won 70 games and lost 40 games, which one of the following ratios is representative of that fact?

• 7:2

• 4:7

• 7:9

• 7:4

Multiple Choice

A proportion compares a

• x to y

• negative to positive

• part to whole

• part to part

Proportion

A proportion is two ratios set equal to one another. Proportions can help solve questions about scales of size or distance, such as a map or model. It is important that the placement of the known quantities in both ratios makes sense in proportions.

Multiple Choice

If a baseball team won 7 games and lost 4 games, which of the following ratios represents the total games won to the total number of games played?

• 11:7

• 11:4

• 7:11

• 7:4

Multiple Choice

The following fractions are proportional:

 $\frac{12}{3}\ \ \ \ \frac{20}{5}\ \ \ \ \frac{8}{2}\ \ \ \ \frac{32}{8}$  

• True

• False

Multiple Choice

The following fractions are proportional:


 $\frac{15}{3}\ \ \ \ \frac{17}{4}\ \ \ \ \frac{19}{5}\ \ \ \ \frac{21}{6}$  

• True

• False 

Multiple Choice

The following fractions are proportional:

 $\frac{6}{4}\ \ \ \ \frac{9}{6}\ \ \ \ \ \frac{12}{8}\ \ \ \ \frac{3}{2}$  

• True

• False