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Anonymous Anonymous
  • 23-02-2016
  • Mathematics
Answered

If y=-12, when x=9, find y when x=-4

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 23-02-2016

2 different things
if it is
xy=k or if it is x/y=k
direct or inverse variation

I will do the x/y=k one
9/-12=-3/4
x=-4
-3/4=-4/y
mutiply both sides by y
-3/4y=-4
mutiply both sides by -4/3 to clear fraction
y=16/3




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