Ratio and Proportion Review

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

What is a proportion?

Back

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

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, often represented as y = kx.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units to determine how much of one item corresponds to one unit of another item.

Front

If the ratio of dogs to cats is 5 to 3, how do you write this as a fraction?

Back

The ratio of dogs to cats can be written as 5/3.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

Front

What does it mean if two ratios form a proportion?

Back

If two ratios form a proportion, it means that they are equivalent, and the cross products of the ratios are equal.

Front

If 72 ounces of juice serves 12 people, what is the unit rate of ounces per person?

Back

6 ounces per person.

Front

In a proportion, if a/b = c/d, what is the cross-multiplication rule?

Back

The cross-multiplication rule states that a * d = b * c.

Front

What is an example of a real-life situation that uses ratios?

Back

A recipe that requires 2 cups of flour for every 3 cups of sugar is an example of a ratio in a real-life situation.