If (3,-2) is a solution of the equation $3 x - p y - 7 = 0$ the n the value of p is

-1

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- \frac{13}{3}

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Solution

The correct option is A -1
(3,-2) is a solution of $3 x - p y - 7 = 0$
$\Rightarrow 3 (3) - p (- 2) - 7 = 0$
$\Rightarrow 9 + 2 p - 7 = 0 \Rightarrow 2 p + 2 = 0$
$\Rightarrow 2 p = - 2 \Rightarrow p = - 1$

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