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 quantity is constant.

Front

How do you find the constant of proportionality?

Back

The constant of proportionality can be found by dividing one quantity by the other in a proportional relationship.

Front

What is the unit rate?

Back

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

Front

If the cost of 4 pounds of grapes is $24.36, what is the cost per pound?

Back

$6.09 per pound.

Front

What does it mean if two quantities are not proportional?

Back

If two quantities are not proportional, their ratios are not constant.

Front

How can you determine if a table of values represents a proportional relationship?

Back

You can determine if a table represents a proportional relationship by checking if the ratios of corresponding values are equal.

Front

What is the formula for finding the constant of proportionality in a direct variation?

Back

The formula is y = kx, where k is the constant of proportionality.

Front

If Dr. Morrison drove 340 miles in 5 hours, what was his rate of speed?

Back

His rate of speed was 68 miles per hour.

Front

What is the relationship between distance, rate, and time?

Back

The relationship is described by the formula: Distance = Rate × Time.

Front

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

Back

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