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raketka [301]
4 years ago
13

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

Mathematics
2 answers:
malfutka [58]4 years ago
4 0
You cross multiply and you should get i think 6?
Reika [66]4 years ago
3 0
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
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Answer:

<h2>        y = x² - 1</h2>

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