6.PFA.2 Proportions

Front

What is a proportion?

Back

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

Front

How do you find a missing value in a proportion?

Back

To find a missing value in a proportion, you can use cross-multiplication.

Front

What does the term 'ratio' mean?

Back

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

Front

If the ratio of x to y is 3:2, what does this mean?

Back

This means for every 3 units of x, there are 2 units of y.

Front

What is the first step to solve a proportion problem?

Back

Identify the two ratios that are being compared.

Front

What is cross-multiplication?

Back

Cross-multiplication is a method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If 4 pizzas cost $28, what is the cost of 1 pizza?

Back

$7 (Divide $28 by 4).

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities increase or decrease at the same rate.

Front

How can you represent a proportional relationship in a table?

Back

By showing pairs of values that maintain the same ratio.

Front

What is the ratio of 8 to 2?

Back

4:1 (Divide both numbers by 2).