Ch 4 Flashcard (4.1 - 4.4) Ratio, Rates, Proportions

Front

What is a ratio?

Back

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

Front

How do you find the unit rate?

Back

Front

What is a proportion?

Back

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor (GCF). For example, the ratio 12:16 simplifies to 3:4.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value of the ratio of two proportional quantities, often represented as k in the equation y = kx.

Front

If 1 dozen doughnuts costs $3.00, what is the cost of 1 doughnut?

Back

1 doughnut costs $0.25.

Front

What is the simplest form of the ratio 9 feet to 12 yards?

Back

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units, such as miles per hour or cost per item.

Front

How do you convert a ratio to a fraction?

Back

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.