Question

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

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Answer 1

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