Decide whether or not each equation represents a proportional relationship. A. Final measurements in cup (C) vs. The same volume measured in ounces (Z): c= 1/8z B. Area of a square (A) vs. The side length of the square (s):A= s Power of two 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= 60/w