8.EE.5: Constant of Proportionality

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, defined as the ratio of one quantity to another.

Front

If y = kx, what does k represent?

Back

k represents the constant of proportionality in the equation, indicating how much y changes for a unit change in x.

Front

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

Back

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

Front

What is the constant of proportionality in the equation y = 5x?

Back

The constant of proportionality is 5.

Front

If the constant of proportionality is 3, what is the relationship between x and y?

Back

The relationship is y = 3x.

Front

What does it mean if the constant of proportionality is 0?

Back

If the constant of proportionality is 0, it means that y does not change with x; y is always 0.

Front

In the equation y = 1/2x, what is the constant of proportionality?

Back

The constant of proportionality is 1/2.

Front

If Justin ordered 5 ice cream bars for $12.25, how much was each ice cream bar?

Back

Each ice cream bar costs $2.45.

Front

Identify the constant of proportionality in the equation y = 3x + 2.

Back

There is no constant of proportionality because the equation is not in the form y = kx.

Front

What is the constant of proportionality in the equation y = 10x?

Back

The constant of proportionality is 10.