12/9 Proportional Formula Test Practice

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 a nonproportional relationship?

Back

A nonproportional relationship is a relationship where the ratio of one quantity to another is not constant.

Front

Identify the constant of proportionality in the equation y = 5x.

Back

The constant of proportionality is 5.

Front

Identify the constant of proportionality in the equation y = -\frac{2}{3}x.

Back

The constant of proportionality is -\frac{2}{3}.

Front

Does the equation y = 3x + 2 show a proportional relationship?

Back

No, it does not show a proportional relationship because of the +2.

Front

Does the equation y = 4x show a proportional relationship?

Back

Yes, it shows a proportional relationship.

Front

What is the formula for finding the constant of proportionality?

Back

The constant of proportionality can be found using the formula k = \frac{y}{x}.

Front

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

Back

The constant of proportionality is 2.

Front

What does it mean if a graph passes through the origin?

Back

If a graph passes through the origin, it indicates a proportional relationship.

Front

What is the slope of a line in a proportional relationship?

Back

The slope of a line in a proportional relationship is equal to the constant of proportionality.