Find the value of k if (2, 3) is the solution of the equation 2x - ky + 5 = 0.
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Solution

The correct option is A 3
(2, 3) is the solution of the equation 2x - ky + 5 = 0.

We know that solution of an equation satisfies the equation.
So,

2(2) - k(3) + 5 = 0
4 - 3k + 5 = 0
9 - 3k = 0
k = 3

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