Practice 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 is the constant of proportionality?

Back

The constant of proportionality (k) is the constant ratio in a proportional relationship, expressed as y = kx.

Front

How do you identify a proportional relationship from a graph?

Back

A graph represents a proportional relationship if it is a straight line that passes through the origin (0,0).

Front

What does the unit rate represent in a proportional relationship?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit. It shows how much of one quantity corresponds to one unit of another quantity.

Front

If 100 is earned for each hour worked, what is the unit rate?

Back

The unit rate is $100 per hour.

Front

How can you express a proportional relationship using an equation?

Back

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

Front

What is the relationship between x and y in the equation y = 2x?

Back

In the equation y = 2x, for every 1 unit increase in x, y increases by 2 units.

Front

What does it mean if a table shows a constant ratio?

Back

If a table shows a constant ratio, it indicates that the relationship between the two quantities is proportional.

Front

How do you determine if a set of values is proportional?

Back

To determine if a set of values is proportional, check if the ratios of corresponding values are equal.

Front

What is an example of a proportional relationship in real life?

Back

An example of a proportional relationship is the cost of apples: if 1 apple costs $2, then 3 apples cost $6, maintaining the ratio of cost to quantity.