Proportional Graphs & 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

What does it mean for a graph to be proportional?

Back

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

Front

What is the origin in a graph?

Back

The origin is the point where the x-axis and y-axis intersect, represented as (0,0).

Front

How can you tell if a graph is not proportional?

Back

A graph is not proportional if it does not pass through the origin or if it is not a straight line.

Front

What is the slope of a proportional graph?

Back

The slope of a proportional graph is the constant rate of change between the two variables.

Front

If x = 0, what is the value of y in a proportional relationship?

Back

If x = 0 in a proportional relationship, then y must also equal 0.

Front

What is a non-proportional relationship?

Back

A non-proportional relationship is when the ratio between two quantities is not constant.

Front

How do you find the y-value in a proportional relationship?

Back

To find the y-value, multiply the x-value by the constant of proportionality.

Front

What is a constant of proportionality?

Back

The constant of proportionality is the constant factor that relates two proportional quantities.

Front

What does it mean if a table of values is proportional?

Back

A table of values is proportional if the ratios of corresponding values are constant.