Proportional Relationships (Tables & Graphs) - 7.RP.2a

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 quantity is constant.

Front

How can you tell if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio between two proportional quantities.

Front

What does a proportional graph look like?

Back

A proportional graph is a straight line that passes through the origin (0,0).

Front

If 150 people wait 20 minutes, how long will 240 people wait?

Back

32 minutes.

Front

What is the formula to find the constant of proportionality?

Back

Constant of Proportionality = y/x, where y is the dependent variable and x is the independent variable.

Front

What does it mean if a graph does not pass through (0,0)?

Back

If a graph does not pass through (0,0), it indicates that the relationship is not proportional.

Front

How do you find the unit rate in a proportional relationship?

Back

The unit rate is found by dividing the total amount by the number of units, giving the amount per one unit.

Front

What is an example of a proportional relationship in real life?

Back

An example is the relationship between distance and time when traveling at a constant speed.

Front

What is the significance of a straight line in a graph?

Back

A straight line indicates a constant rate of change, which is characteristic of proportional relationships.