(B) Given the equation is $ax + 3y = 21$.Since the graph passes through the point $(5, 2)$,the coordinates $x = 5$ and $y = 2$ must satisfy the equati

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(B) Given the equation is $ax + 3y = 21$.Since the graph passes through the point $(5, 2)$,the coordinates $x = 5$ and $y = 2$ must satisfy the equation.Substituting the values of $x$ and $y$ into the equation:$a(5) + 3(2) = 21$$5a + 6 = 21$$5a = 21 - 6$$5a = 15$$a = \frac{15}{5}$$a = 3$Therefore,the value of $a$ is $3$.

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

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If the graph of the equation $ax + 3y = 21$ passes through the point $(5, 2)$,then the value of $a = \ldots$

A
$7$
B
$3$
C
$5$
D
$6$

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Linear Equations in Two Variables

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Mix Examples - Linear Equations in Two Variables

How many solution$(s)$ of the equation $2x + 1 = x - 3$ are there on the:
$(i)$ Number line
$(ii)$ Cartesian plane

Easy

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The total cost of $3$ sweetlimes and $6$ oranges is ₹ $210$. Show this statement as a linear equation in two variables.

Medium

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The graph of the linear equation $2x + 3y = 6$ is a line which meets the $x$-axis at the point

Easy

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Write the following as an equation in two variables:
$5x = -10$

Easy

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If we multiply or divide both sides of a linear equation with a non-zero number,then the solution of the linear equation:

Easy

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If the graph of the equation $ax + 3y = 21$ passes through the point $(5, 2)$,then the value of $a = \ldots$

Similar Questions

How many solution$(s)$ of the equation $2x + 1 = x - 3$ are there on the:$(i)$ Number line$(ii)$ Cartesian plane

The total cost of $3$ sweetlimes and $6$ oranges is ₹ $210$. Show this statement as a linear equation in two variables.

The graph of the linear equation $2x + 3y = 6$ is a line which meets the $x$-axis at the point

Write the following as an equation in two variables:$5x = -10$

If we multiply or divide both sides of a linear equation with a non-zero number,then the solution of the linear equation:

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How many solution$(s)$ of the equation $2x + 1 = x - 3$ are there on the:
$(i)$ Number line
$(ii)$ Cartesian plane

Write the following as an equation in two variables:
$5x = -10$