Graphs of 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 do you identify a proportional relationship from a table?

Back

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

Front

What does the point (4, 2) represent in a proportional relationship?

Back

It means that 4 items were purchased for $2, indicating a constant unit rate.

Front

What is the unit rate in a proportional relationship?

Back

The unit rate is the ratio of two measurements in which the second quantity is 1.

Front

How can you express a proportional relationship using an equation?

Back

Front

What is the constant of proportionality?

Back

The constant of proportionality is the factor by which one quantity is multiplied to obtain the other in a proportional relationship.

Front

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

Back

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

Front

What does it mean if a graph does not pass through the origin?

Back

If a graph does not pass through the origin, it does not represent a proportional relationship.

Front

What is the formula to find the cost of buying multiple items in a proportional relationship?

Back

Front

If you can buy 5 shirts for $60, what is the cost of 1 shirt?

Back