Constant of Proportionality Review

Front

What is the constant of proportionality?

Back

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

Front

How do you determine if a relationship is proportional?

Back

A relationship is proportional if the ratio of the two quantities is constant.

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 = 3x, what is the constant of proportionality?

Back

The constant of proportionality is 3.

Front

What does a graph of a proportional relationship look like?

Back

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

Front

If a train travels 90 miles in 2 hours, what is its speed in miles per hour?

Back

The speed is 45 miles per hour.

Front

Write the equation for a proportional relationship where k = 18.50.

Back

The equation is y = 18.50x.

Front

What is the constant of proportionality if y = 1/3x?

Back

The constant of proportionality is 1/3.

Front

If a table shows that for every 5 apples, there are 15 oranges, what is the constant of proportionality?

Back

The constant of proportionality is 3 (15/5).

Front

How can you find the constant of proportionality from a table of values?

Back

Divide the y-value by the corresponding x-value for any pair of values.