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 is constant.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities in the equation y = kx.

Front

Which equation represents a proportional relationship? y = 5x - 7 or y = 3x?

Back

y = 3x represents a proportional relationship because it can be expressed in the form y = kx.

Front

If y = kx, what does k represent?

Back

k represents the constant of proportionality in the equation.

Front

How do you determine if an equation is proportional?

Back

An equation is proportional if it can be written in the form y = kx, where k is a non-zero constant.

Front

What is the equation for a proportional relationship?

Back

The equation for a proportional relationship is y = kx.

Front

If you travel 150 miles on 5 gallons, how far do you travel per gallon?

Back

You travel 30 miles per gallon.

Front

What does the slope of a line represent in a proportional relationship?

Back

The slope represents the constant of proportionality.

Front

If y = 1/2x, what is the constant of proportionality?

Back

The constant of proportionality is 1/2.

Front

Which of the following is NOT a proportional relationship: y = -2x, y = 1/2x, y = 5x - 7?

Back

y = 5x - 7 is NOT a proportional relationship.