1. decide whether or not each equation represents a proportional relationship.
a. volume measured in cups (c) vs. the same volume measured in ounces (z): c =
) =
b. area of a square (a) vs. the side length of the square (s): a = 32
c. perimeter of an equilateral triangle (p) vs. the side length of the triangle (s):
3s =p
d. length (l) vs. width (w) for a rectangle whose area is 60 square units: l =
: 0