Proportional Relationships -- Tables, Equations, and Graphs

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

What is the constant of proportionality?

Back

The constant of proportionality (k) is the constant value that relates two proportional quantities, represented in the equation y = kx.

Front

How do you determine if a table represents a proportional relationship?

Back

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

Front

What is the formula for a proportional relationship?

Back

The formula for a proportional relationship is y = kx.

Front

If y = 2x, what is the constant of proportionality?

Back

The constant of proportionality is k = 2.

Front

What does it mean if a graph passes through the origin?

Back

If a graph passes through the origin, it indicates that the relationship is proportional.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

If a recipe calls for 1.5 cups of milk and 3 cups of flour, what is the equation relating milk (x) to flour (y)?

Back

The equation is y = 2x.

Front

What does it mean if the unit rate is not constant in a table?

Back

If the unit rate is not constant, the table does not represent a proportional relationship.

Front

How can you find the constant of proportionality from a graph?

Back

You can find the constant of proportionality by determining the slope of the line on the graph.