Topic 3 Test: Proportional Relationships (2024)

Front

What is the constant of proportionality in the equation y = ½x?

Back

1/2

Front

How can you determine if a graph is proportional?

Back

Check if the ratio of y to x is constant.

Front

In the equation y = kx, what does k represent?

Back

Constant of proportionality.

Front

What does it mean for a relationship to be proportional?

Back

The ratio between two quantities is constant.

Front

If a table shows values of x and y, how can you tell if it is proportional?

Back

If the ratio y/x is the same for all pairs.

Front

What is the formula for a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

Front

If 3 phones are sold for $129, what is the constant of proportionality?

Back

$43 per phone.

Front

What is an example of a non-proportional relationship?

Back

A relationship where the ratio of y to x changes.

Front

If y = 4x, what is the constant of proportionality?

Back

4

Front

How do you calculate the total earnings from selling multiple items at a constant price?

Back

Multiply the number of items sold by the price per item.