Proportional Relationships Flashcard

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 do you find the missing value in a proportional relationship table?

Back

To find the missing value, use the constant of proportionality (k) and set up a proportion based on the known values.

Front

What is the equation for a proportional relationship?

Back

The equation for a proportional relationship can be expressed as y = kx, where k is the constant of proportionality.

Front

What is the constant of proportionality?

Back

The constant of proportionality (k) is the ratio of one quantity to another in a proportional relationship.

Front

How do you calculate the unit rate?

Back

The unit rate is calculated by dividing the total quantity by the number of units. For example, if 4 hours of rain equals 8 cm, the unit rate is 8 cm / 4 hours = 2 cm per hour.

Front

If Maria makes $15 an hour, what is the equation representing her earnings?

Back

The equation is y = 15x, where y is the total earnings and x is the number of hours worked.

Front

What does a unit rate tell you?

Back

A unit rate tells you how much of one quantity corresponds to one unit of another quantity.

Front

How can you identify a proportional relationship from a graph?

Back

A proportional relationship can be identified from a graph if the line passes through the origin (0,0) and is straight.

Front

What is the significance of the slope in a proportional relationship?

Back

In a proportional relationship, the slope of the line represents the constant of proportionality (k).

Front

How do you express a constant of proportionality in fraction form?

Back