The article says In anatomy, heterochromia refers to a difference in coloration, usually of the iris but also of hair or skin, but the article is all about the eye variety and nothing about hair or skin heterochromia.
Join us! Peaches are being sold for $2 per pound. If x represents the number of pounds of peaches bought and y represents the total cost of the peaches, which best describes the values of x and y? The values of both x and y can be any real number. The values of both x and y will be real numbers greater than or equal to 0.
Peach Equivalents and Substitutions.  In most cases, nectarines may be substituted for peaches in equal measure.  3 to 4 medium peaches = 1 pound.  1 pound peaches = 2-3/4 to 3 cups sliced.  1 pound peaches = 2-1/4 cups chopped.  1 pound peaches = 2 cups pureed.  10 ounces frozen = 1 cup slices.