Proportional Relationships

Front

What is a proportional relationship?

Back

A relationship between two quantities where the ratio of one quantity to the other is constant.

Front

What is the constant of proportionality?

Back

The constant ratio in a proportional relationship, often represented as 'k'.

Front

How do you find the unit rate?

Back

Divide the total quantity by the number of units.

Front

If a car travels 80 miles in 2 hours, what is the unit rate?

Back

40 miles per hour.

Front

What does the equation y = kx represent?

Back

It represents a proportional relationship where 'k' is the constant of proportionality.

Front

How can you identify a proportional relationship from a graph?

Back

A proportional relationship will show a straight line that passes through the origin.

Front

What is the unit rate of 30 dollars for 3 hours?

Back

10 dollars per hour.

Front

If the table shows (1, 2), (2, 4), (3, 6), what is the constant of proportionality?

Back

The constant of proportionality is 2.

Front

What is the meaning of 'direct variation'?

Back

A type of relationship where one variable is a constant multiple of another.

Front

If y = 5x, what is the constant of proportionality?

Back

The constant of proportionality is 5.