23
2
56
lesson summary
if a proportional relationship is described by the set of ordered pairs (x, y) that satisfies the equation y = kx for
some number k, then k is called the constant of proportionality.
for each of the following problems, define the constant of proportionality to answer the
follow-up question.
1.
the dry cleaning fee for pairs of pants is $18.
a. what is the constant of proportionality?
b. how much will the dry cleaner charge for 11 pairs of pants?