Suppose that a is inversely proportional to b. If a = 4 when b = 9, find a when b = -72.

peepeepuupuu Apr 21, 2020

#1**+1 **

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

ElectricPavlov Apr 21, 2020