State Review Day 3 Ratios & Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, often expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

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

Front

How do you find the weight of one bag of flour if three bags of flour and two bags of sugar weigh 32 pounds?

Back

Let the weight of a bag of flour be f and a bag of sugar be s. The equation is 3f + 2s = 32. If 4f = 32, then f = 8 pounds.

Front

If the weight of a bag of flour is 8 pounds, what is the weight of a bag of sugar?

Back

Using the equation 3(8) + 2s = 32, we find that 2s = 32 - 24, so s = 4 pounds.

Front

What is the equation that represents the relationship between commission earned (c) and the number of sales (s) if c = 4s?

Back

The equation shows that for every sale made, the commission earned is 4 times the number of sales.

Front

Back

Adriana uses 2.5 cups of pretzels for 1 cup of raisins.

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio.

Front

How can you identify a proportional relationship from a table?

Back

Check if the ratio of y to x is constant for all pairs of values.

Front

What is the least expensive option for Kelli when buying a book online?

Back

Ordering another small item for $3 and using Deal #3 is the least expensive option.

Front

What does it mean if a relationship is not proportional?

Back

It means that the ratio between the two quantities changes and is not constant.