Ratio and Proportions 7th Grade Final

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 solve a proportion?

Back

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

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population, which is the entire group being studied.

Front

What does it mean for two quantities to be in a proportional relationship?

Back

Two quantities are in a proportional relationship if they maintain a constant ratio.

Front

If 3/4 of a pizza is left, what fraction of the pizza is gone?

Back

1/4 of the pizza is gone.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

What is an example of a real-world proportional relationship?

Back

The relationship between distance and time when driving at a constant speed.

Front

How can you determine if a graph shows a proportional relationship?

Back

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

Front

What is the scale factor in a proportional relationship?

Back

The scale factor is the ratio of any two corresponding lengths in similar geometric figures.