If the point (3, 5) lies on the graph of the equation $3 y = a x + 9$ , the value of $a$ is _____.

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Solution

The correct option is B 2
If the point lies on the graph then it satisfies the given equation,
Putting x = 3, y = 5 in the given equation,
$3 \times 5 = a \times 3 + 9$
$\Rightarrow$ 3a + 9 = 15
$\Rightarrow$ a = 2

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