What are constant ratios?

Constant ratios talks about the ratio between two variables. Get the definition of constant ratios in mathematics with help from a longtime mathematics educator in this free video clip.

What is the constant of proportionality?

The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate. The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other.

How do you find the constant of proportionality k?

The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other. Once you know the constant of proportionality you can find an equation representing the directly proportional relationship between x and y, namely y=kx, with your specific k. Hope this helps! Show more...