(D) Given that $(5, 2)$ is a solution of the equation $3x + ky = 25$.This means that when $x = 5$ and $y = 2$,the equation must be satisfied.Substitut

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(D) Given that $(5, 2)$ is a solution of the equation $3x + ky = 25$.This means that when $x = 5$ and $y = 2$,the equation must be satisfied.Substituting the values of $x$ and $y$ into the equation:$3(5) + k(2) = 25$$15 + 2k = 25$Subtracting $15$ from both sides:$2k = 25 - 15$$2k = 10$Dividing by $2$:$k = 5$Therefore,the value of $k$ is $5$.

Class 9 Mathematics Linear Equations in Two Variables Mix Examples - Linear Equations in Two Variables

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Find the value of $k$ if $(5, 2)$ is a solution of $3x + ky = 25$.

A
$20$
B
$15$
C
$10$
D
$5$

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Find the value of $k$ if $(5, 2)$ is a solution of $3x + ky = 25$.

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Express the following linear equation in the form $ax + by + c = 0$ and indicate the values of $a, b,$ and $c$ in each case:
$\pi x - 3y = 18$