+231 Suppose that a is inversely proportional to b. If a = 4 when b = 9, find a when b = -72.
+37146 Inversely proportional means a = k/b (directly proprtional would be a = kb)
4 = k 9 results in k = 4/9
a = 4/9 b put in b = -72 then calc 'a'
a = 4/9 (-72) results in a = -32
