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 quantity is constant.

Front

What does the constant of proportionality represent?

Back

The constant of proportionality (k) represents the ratio between two proportional quantities, indicating how much one quantity changes in relation to the other.

Front

How do you find the unit rate?

Back

The unit rate is found by dividing the quantity of one variable by the quantity of another variable, typically expressed as 'per 1' of the second variable.

Front

What is the unit rate for 120 miles in 2 hours?

Back

The unit rate is 60 miles/1 hour.

Front

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

Back

The cost of 1 shirt is $12.

Front

How do you express a proportional relationship mathematically?

Back

A proportional relationship can be expressed as y = kx, where k is the constant of proportionality.

Front

What is the formula to find k in a proportional relationship?

Back

k = y/x, where y is the dependent variable and x is the independent variable.

Front

Which ordered pair represents the unit rate? (0.50, 1), (2, 1), (1, 0.50), (1, 2)

Back

(1, 0.50) represents the unit rate.

Front

What is the constant of proportionality if k = 30 and y = 6?

Back

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