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 in the equation y = kx?

Back

The constant of proportionality is 'k', which represents the ratio of y to x.

Front

In the equation y = 14x, what is the constant of proportionality?

Back

14

Front

What does it mean if a relationship is non-proportional?

Back

It means that the ratio between the two quantities is not constant.

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 (0,0).

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit.

Front

Find the unit rate of 624 calories in 3 servings.

Back

208 calories per serving.

Front

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

Back

No, because it does not pass through the origin.

Front

Which graph represents a proportional relationship?

Back

A graph that is a straight line passing through the origin.

Front

If the constant of proportionality is 15, what is the equation of the proportional relationship?

Back

y = 15x.