Pre flashcard constant of proportionality

Front

What is the constant of proportionality?

Back

The constant of proportionality is a constant ratio between two variables that are directly proportional to each other.

Front

If y = kx, what does k represent?

Back

k represents the constant of proportionality in the equation y = kx.

Front

Identify the constant of proportionality in the equation y = 30x.

Back

k = 30.

Front

What does it mean if two quantities are proportional?

Back

It means that as one quantity changes, the other quantity changes at a constant rate.

Front

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

Back

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

Front

If the constant of proportionality is 4, what is the relationship between x and y?

Back

y = 4x.

Front

What is the constant of proportionality if y = 8 when x = 1?

Back

k = 8.

Front

In a graph showing boys to girls, if there are 2 boys for every 1 girl, what is the constant of proportionality?

Back

k = 2.

Front

What is the constant of proportionality if y = 1/4x?

Back

k = 1/4.

Front

If the ratio of boys to girls is 3:1, what is the constant of proportionality?

Back

k = 3.