Ratios and Proportions Flashcard

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one.

Front

How do you find the unit rate from a total?

Back

To find the unit rate, divide the total amount by the number of units.

Front

What does it mean for a graph to be proportional?

Back

A graph is proportional if it is a straight line that passes through the origin (0,0).

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Amount / Number of Units.

Front

If Naveena earned $20.40 in 3 hours, what is her unit rate?

Back

$6.80 per hour.

Front

What is the significance of the origin in proportional relationships?

Back

The origin (0,0) indicates that when one quantity is zero, the other quantity is also zero, showing a direct relationship.

Front

How can you tell if two ratios form a proportion?

Back

Two ratios form a proportion if their cross products are equal.