Constant of Proportionality Review

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio between two proportional quantities, often represented as 'k' in the equation y = kx.

Front

How do you find the constant of proportionality from a table?

Back

To find the constant of proportionality from a table, divide the y-value by the corresponding x-value for any pair of values.

Front

What is the equation of a proportional relationship?

Back

The equation of a proportional relationship is in the form y = kx, where k is the constant of proportionality.

Front

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

Back

The constant of proportionality is 4.

Front

What does a proportional relationship look like on a graph?

Back

A proportional relationship on a graph is represented by a straight line that passes through the origin (0,0).

Front

What is the unit rate?

Back

The unit rate is the constant of proportionality expressed as a quantity per one unit of another quantity.

Front

If 10 apples cost $20, what is the unit price per apple?

Back

The unit price per apple is $2.

Front

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

Back

A non-proportional relationship does not have a constant ratio between the x and y values, meaning the graph does not pass through the origin.

Front

How can you tell if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratio of y to x is constant for all pairs of values.

Front

What is the formula to calculate the unit cost?

Back

The formula to calculate the unit cost is total cost divided by the number of units.