Seudónimo
Seudónimo
24-02-2016
Mathematics
contestada
If y=-12, when x=9, find y when x=-4
Respuesta :
apologiabiology
apologiabiology
24-02-2016
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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