Constant of Proportionality

Constant of Proportionality

Review for Quiz

The Constant of Proportionality

• A number that shows the proportional relationship between two amounts (x and y)

• Also called: a constant ratio, unit rate, constant multiplier

Multiple Choice

What is constant of proportionality?

• A number that shows the proportional relationship between two amounts (x and y)

• when two quantities are always in equivalent ratios

You can find the constant of proportionality in a table.

x values times the constant of proportionality is the y value

Sometimes the number being multiplied is not obvious, so we can divide!

We can write a COP an the equation of a line: y=kx where k is the constant

• When the constant is 16, then the equation is y=16x

• When the constant is 57, then the equation is y=57x

Let's Put it All Together

What is the Constant of Proportionality for this table?

What would the equation of the line be?