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The variables x and y are directly proportional, and y=2 when x=3. What is the value of y when x=9

Sagot :

[tex]If\ x\ and\ y\ are\ directly\ proportional\ then\ \frac{y}{x}\ is\ constans\\---------------------------\\\\\frac{2}{3}=\frac{y}{9}\\\\cross\ multiply\\\\3y=2\times9\\\\3y=18\ \ \ \ |divide\ both\ sides\ by\ 3\\\\y=6[/tex]
pelkey
you cross multiply and you should get i think 6?
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