Unit 2a PRACTICE TEST

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

How can you identify a proportional relationship from a table?

Back

A proportional relationship can be identified if the ratios of corresponding values are equal.

Front

What is the constant of proportionality?

Back

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

Front

If y = 3x, what is the constant of proportionality?

Back

The constant of proportionality is 3.

Front

What does the equation y = kx represent?

Back

The equation y = kx represents a linear relationship where y is directly proportional to x.

Front

How do you determine if a graph represents a proportional relationship?

Back

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

Front

What does it mean if a table does not represent a proportional relationship?

Back

It means that the ratios of the corresponding values are not constant.

Front

In the context of cost and quantity, what indicates a proportional relationship?

Back

If the cost per item remains constant as the quantity changes, it indicates a proportional relationship.

Front

If 4 shirts cost $25 and 6 shirts cost $37.50, how do you check for proportionality?

Back

Calculate the cost per shirt for both quantities. If they are equal, the relationship is proportional.

Front

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

Back

An example is the relationship between distance and time at a constant speed.