The relationship is proportional.
Two variables are said to be proportional if their ratios are equivalent. That means that for the variables to be proportional then their ratios must be equivalent.
Let x represent the amount of seed in Oz and let y represent the area covered in ft². Hence, to determine if the variables are proportional, then the ratio of y to x is to be constant.
a) 1 Oz seed covers 22 ft², hence:
Ratio of area to amount of seed = y / x = 22 / 1 = 22 ft² per Oz
b) 2 Oz seed covers 44 ft², hence:
Ratio of area to amount of seed = y / x = 44 / 2 = 22 ft² per Oz
c) 3 Oz seed covers 66 ft², hence:
Ratio of area to amount of seed = y / x = 66 / 3 = 22 ft² per Oz
d) 4 Oz seed covers 88 ft², hence:
Ratio of area to amount of seed = y / x = 88 / 4 = 22 ft² per Oz
Hence since the ratio is constant (22 ft² per Oz), hence this relationship is proportional.
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