A snack mix recipe calls for 10 cups of cereal and 4 cups of pretzel sticks.

Question

What is the constant of proportionality that relates the number of cups of cereal, y, to the number of cups of pretzel sticks, x?

Answer 1

The constant of proportionality, k, can be found by dividing the number of cups of cereal, y, by the number of cups of pretzel sticks, x.

k = y / x

In this case, k = 10 / 4 = 2.