Question

Ex 4.2 class 9

4. Find the value of k, if x=2, y = 1 is a solution of the equation 2x + 3y=k​

Answer 1

Given:-

• Equation = 2x + 3y = k
• Value of x = 2 and y = 1

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To find

• Value of k.

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Solution

• Here we have the value of x and y.
• Now we will put the value of x and y in the given equation.

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$\implies\bf{2(2) + 3(1) = k}$

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$\implies\bf{4 + 3 = k}$

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$\implies\bf{7 = k}$

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$\boxed{\implies{\bf{\red{k = 7}}}}$

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Hence, the value of k is 7.