Verified Answer :

x varies directly as y
x = ky
3 = 2k
k = \(\frac{3}{2}\)
 when x =9
9 = \(\frac{3}{2}\)y
\(\frac{18}{3}\) = y
∴y = 6

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Joshtray

If x and y are directly proportional, x = ky
When x = 3, y = 2.
So 3 = 2k
k = 3/2
So x = 3y/2
When x = 9,
9 = 3y/2
18 = 3y
y = 6
So when x = 9, y = 6.
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