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

What characterizes the graph of a proportional relationship?

Back

The graph of a proportional relationship is a straight line that passes through the origin (0,0).

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio of one quantity to another in a proportional relationship, often represented as 'k'.

Front

How do you find the unit rate in a proportional relationship?

Back

The unit rate is found by dividing the total quantity by the number of units, giving the amount per one unit.

Front

If a person can write 25 words per minute, what is the unit rate?

Back

The unit rate is 25 words per minute.

Front

What does a constant of proportionality of 9/1 mean in practical terms?

Back

It means that for every 1 unit of the second quantity, there are 9 units of the first quantity.

Front

How do you determine who has the better deal when comparing prices?

Back

To determine who has the better deal, calculate the unit price for each option and compare them.

Front

If Evan bought 5 pounds of bananas for $10, what is the price per pound?

Back

The price per pound is $2 per pound.

Front

If Christy bought 6 pounds of bananas for $9, what is the price per pound?

Back

The price per pound is $1.50 per pound.

Front

Who has the better deal: Evan or Christy?

Back

Christy has the better deal because she pays $1.50 per pound compared to Evan's $2 per pound.