2025 Math 7: Unit 3 Test Review Proportional Relationships

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

How can you identify if a graph represents a proportional relationship?

Back

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

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio between two proportional quantities, often represented as 'k'.

Front

If the constant of proportionality is 1.4, what does this mean?

Back

It means that for every unit increase in one quantity, the other quantity increases by 1.4 times.

Front

What does it mean if a graph is not proportional?

Back

If a graph is not proportional, it means that the ratios of the quantities are not constant and the graph does not form a straight line through the origin.

Front

What is an example of a proportional relationship?

Back

An example of a proportional relationship is the relationship between distance and time at a constant speed.

Front

What is an example of a non-proportional relationship?

Back

An example of a non-proportional relationship is the relationship between the number of items purchased and the total cost when there is a fixed fee added.

Front

How do you determine if a set of ratios is proportional?

Back

To determine if a set of ratios is proportional, check if all the ratios simplify to the same value.

Front

What does it mean if all ratios in a table are constant?

Back

If all ratios in a table are constant, it indicates that the relationship between the two quantities is proportional.

Front

What is the significance of the origin in proportional relationships?

Back

The origin (0,0) is significant in proportional relationships because it indicates that when one quantity is zero, the other quantity is also zero.